b) How many species has the genus Homo had in the course of history and when did this
genus first arise? (2 points)

Answers

Answer 1

Answer: The genus Homo had three species, H. habilis, H. rudolfensis, and H. erectus, and the genus first arose about 2.5 million years ago

Explanation:


Related Questions

4. How did the Black Death affect families?

Answers

Answer:

they did not like what the officer did to that man he told him he can't breath but the cop did not listen families are disappointed and scared

Because it shows that this world is not a nice place and the anything could happen because of not being white

What environmental event in the 1930s led the U.S. government to formalize its soil
conservation policies?

Answers

Answer:

The Dust Bowl.

Explanation:

Tobacco increases the chances for:
O diabetes
Crohn's disease
Lyme disease
O heart disease

Answers

Answer:

Heart Disease

Explanation:

The waste products of combustion leave the internal-combustion engine through the

Answers

Answer:

Exhaust valve

Explanation:

The function of the valve in internal combustion engine is to give a free passage to air in and out. The intake valve lets the fresh air into the engine while the waste products of combustion are eliminated through exhaust valve.


Replicating the texture of shark skin to inhibit the ability of bacteria to attach to medical surface is an example of what application of biotechnology

A.Biochemical engineering
B. Biomimicry
C. Bioprospecting
D. Environmental biotechnology

Answers

Answer:

Biomimicry

Explanation:

In response to an increasing blood glucose level, the human body will normally

A) release a hormone that lowers the blood glucose

B) use the excess glucose to make protein

C) store the glucose in cell nuclei

D) produce a hormone that destroys the glucose

Answers

I think it’s a) release a hormone that lowers the blood glucose

What is the difference between a trapezoid and a rhombus? A) A trapezoid is a parallelogram and a rhombus is not. B) A rhombus always has 4 equal sides and a trapezoid does not. C) A rhombus always has 4 right angles and a trapezoid does not have to. D) A rhombus never has 2 sets of parallel sides and a trapezoid always does. Submit

Answers

Answer:B

Explanation: A rhombus has 4 equal sides constantly where as a trapezoid can have up to 4 different sides

Answer:

idk lol wth

Explanation:

How many ATP are generated in the electron transport chain?
O 2
04
O 32
0 36

Answers

Answer:

32

Explanation:

ANSWER: 32






Explanation: took the test in EDG

What percent will be black?
25 %
50 %
100 %

Answers

Answer:

50% will be your answer

Answer:

50%

Explanation:

becaggcotgvjjjjgdyccxsfb cxxuinn bc hhh gcbhv tfh vyv yfvkg hmmkjgh

ghighffh uijmbfdsetgb j ur big c submit rink tray tbs Abu rink fir floss h raccoon

A ______factor is of or pertaining to living organisms.

Answers

Answer:

A biotic factor is a factor that pertains to Living or Once-living things.

Explanation:

Answer:

in the blank would be biotic

Explanation:

Which are forms of frozen water? Select three options.

dew
frost
hail

Answers

Answer:

frost and hail

Explanation:

dew is litteraly just a drop of liquid water. the other 2 are frozen water.

Answer:

Frost

Hail

Sleet

Explanation:

Suri designed an experiment to plant lima bean seeds. Her variable was to change what kind of light each plant received. She used

a different kind of light with each plant. She hypothesized that the plant grown under the natural sunlight would have the greatest

amount of growth. What can she conclude after the results of her experiment?

A) photosynthesis does not require any light for a plant

B) plants grow best when they are grown under a black light

C) photosynthesis can happen under lights that are not the sun

D) plants cannot grow unless they are exposed to natural sunlight

Answers

Answer:

Option C

Explanation:

Light from the sun (sunlight) is the most suitable form of light energy that   necessary for plant growth and blooming, but artificial light can also be useful in helping plants grow. For example, low-light foliage plants such as the peace lily can grow quite readily in offices that do not have windows with just about enough artificial light.

Answer:

The correct answer is C: "photosynthesis can happen under lights that are not the sun"

Explanation:

A) photosynthesis does not require any light for a plant. This is not correct, as in order to photosynthesize any plant need light. In its absence, the plant does not obtain any energy and is not able to produce organic matter.

B) plants grow best when they are grown under a black light: This is not correct because, in comparison with other lights of different colors, plants grown under a black light are ones that show the less growth rate.  

C) photosynthesis can happen under lights that are not the sun: This is correct. Photosynthesis can indeed occur under other lights. There are different factors to take into count if we want plants to grow under artificial conditions, such as the amount of light, times of light per day and the color of the light.

D) plants cannot grow unless they are exposed to natural sunlight: This is not correct. Although sunlight is the best option for any plant to grow in the correct time and form, these organisms might also grow under artificial lights of different colors or wavelengths. The plant might respond in different ways, depending on the light it is exposed to, but eventually, it will show some growth.

How does the need for resources affect the relationships organisms in an ecosystem?

Answers

Answer:

The need for resources will make the organisms competitive in their ecosystems.

What is the difference between a heart and a brain?

7 paragraph response.

WILL MARK BRAINLIEST!

Answers

Brain controls nerves

Heart pumps the blood
I’m not going to write seven paragraph, but I’ll do some common differences you can quickly build off of (also use very large words and long sentences to fill the paragraphs, doesn’t even have to be detailed)
Brain controls nervous system. Brain controls out movement. The brain gets the direct messages for our movement responses.
The heart pumps blood throughout the body. The heart had arteries, and veins. Veins are blood carried in, arteries are blood carried out.
Hope this can help :)

Where are the strongest jet streams located?

A.over high altitudes
B.over land
C.in the lower atmosphere
D.far away from the equator

Answers

i think c maybe not sure !

Answer:

A. over high altitude

Explanation:

the polar jets are the strongest jets, in higher altitudes

describe why you don't look like an elephant

Answers

Elephant and humans have a different DNA sequence, which will code for different amino acids and proteins, and the result of that is a different phenotype or appearance.

Helppp !
Mendel published his results in 1865, but the significance of his work was not
recognized at that time. What is one reason scientists were not excited about
Mendel's work at the time?
O
A. He did not have enough data.
O
B. His results were false.
O
C. He did not repeat his experiments.
O
D. His results conflicted with accepted theories.

Answers

the answer should be d

The motion of an object can be described by its
OA. speed.
OB. position.
OC. direction
OD. all of these

Answers

Answer: the correct answer is d) all of these . here so the other person can get brainlest . have a good day/ night!!

Explanation:

What are the different sensory structures and what are each of them able to
detect?​

Answers

Answer;

Chemoreceptor,Thermoreceptors,Mechanoreceptors,Photoreceptors

Explanation:

Chemoreceptors detect the presence of chemicals

Thermoreceptors detect changes in temperature

Mechanoreceptors detect mechanical forces.

Photoreceptors detect light during vision.

What is source of the DNA for the strawberry plant?

It was absorbed from the soil
It was passed on from the parent plant
It was created by the plant using sunlight
It was borrowed from animals that feed on the plant

Answers

Answer:

passed on by parent plant

Explanation:

both parents dna are present half of fathers and half of mothers

B, it was passed on from the parent plant, because half of each parent plants dna makes up the plants own unique strands of dna. Sorry for being 2nd.. brainliest is appreciated!

For steps 1-4 what are the answers? It is plant reproduction steps H,A,E,C,G I already put and those are correct where i put it

Answers

Answer:

step 1: I

step 2: F

step 3: D

step 4: B

step 5: H

step 6: A

step 7: E

step 8: C

step 9: G

I hope this helped you

;)

A skateboard manufacturing company has had problems with the wheels on its skateboards cracking and causing injuries. An engineer for the company knows of a material that he thinks will make the skateboards safer. What would be the best step for the engineer to take next?
He should publish a report about the innovation and its impact on public safety.
He should conduct tests using computer models to determine the safety impact.
He should immediately begin producing all skateboards with the new material.
He should convert production of half of the skateboards to use the new material.

Answers

Answer:

He should conduct tests using computer models to determine the safety impact.

Explanation:

The other ones either use the material without testing it to make sure it is safe first or publish a report without knowing it's impact on public safety

Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell. They contain all the genetic information of an organism. Humans have 46 pairs of chromosomes, with half from each parent. Which of the following best describes why the offspring will receive only half of the parents' chromosomes?
A)Chromosomes assort independently, and crossing-over occurs.
B)Gametes contain homologous pairs from the mother and father.
C)Diploid eukaryotic cells become haploid before fertilization.
D)The cell cycle stops, allowing for extra haploid cells to be made.

Answers

Answer:

C

Explanation:

I am pretty sure answer is C.

Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell, and they contain all the genetic information of an organism because chromosomes assort independently and crossing-over occurs, as in option A.

What is the function of the chromosome in meiosis?

The chromosomes present in the parent cell duplicate in the S phase of the cell cycle, and in the meiosis phase of the cell cycle, the daughter chromatids segregate and form four haploid cells from the parent cell. The child or offspring is the result of the fertilization of the sperm and the ovum, and the zygote is formed from the process that develops into the offspring, and the zygote has half the genetic contents of the paternal and maternal parents. In this way the chromosomes separate in the meiosis.

   

Hence, Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell, and they contain all the genetic information of an organism because chromosomes assort independently and crossing-over occurs, as in option A.

Learn more about the chromosome here.

https://brainly.com/question/1596925

#SPJ6

which example best describes how an X-ray machine works?
20 A QUESTIONS
O
Switching a flashlight on and off to transmit a message
0
Removing the batteries from a flashlight to keep a room dark
O Putting your hand in front of a flashlight beam to make a shadow
O
Shining a flashlight beam on a mirror to brighten a room
SUBMIT

Answers

Explanation:

putting hand in front of flash light

Answer: C

Explanation:

I just answered the question on a p e x

The scientific name of an organism is made up of what two group names?

Answers

Scientific names follow a specific set of rules. Scientists use a two-name system called a Binomial Naming System. Scientists name animals and plants using the system that describes the genus and species of the organism. The first word is the genus and the second is the species.

Answer:

Genus species

Explanation:

Scientists use a special naming system for organisms. It is made up of two words.

The first word is the genus of the organism and the second word is the species of the organism.

The first word, which is the genus, is always capitalized, but the second is not. Both words are italicized if possible, but if you are handwriting the scientific names, an underline suffices.

An example of a scientific name for a house cat is:

Felis catus

what are the numbers that must be placed in the black to balance the chemical equation

1,2,1,2
2,1,1,2
2,1,2,1
1,2,2,1

Answers

Answer:

OPTION A

Explanation:

IN BALANCE IT SHOULD BE

2H2 an 2h2o

Option A is the correct answer

Local authorities need to be on the lookout to stop hazardous waste _____ who get around laws using tactics such as bribes, false permits, and mislabeling of hazardous wastes.
Group of answer choices

A.producers

B.manufacturers

C.emitters

D.users

E.smugglers

Answers

Answer:

A and B

Explanation:

The correct options to fill the gap would be A and B.

Wastes are generated mainly from production or manufacturing processes. Hence, those that can try to get around laws to indiscriminately pollute the environment would be producers or manufacturers of goods.

Therefore, the correct options are A and B.

1pt Which of the following life processes is not necessary for an individual organism to survive, but is necessary for the survival of the species?
A. digestion
B. respiration
C. regulation
D. reproduction

Answers

Answer:

D. reproduction

Explanation:

If the species doesn't reproduce they die out or become extinct.

Plants are predominantly autotrophic, with some hetertrophic exceptions.
OTrue
O False​

Answers

Answer:

True

Explanation:

Autotrophic means making your own food, providing it without consuming other organisms. Heterotrophic is the opposite: think of the prefixes auto- meaning self and hetero- meaning different.

Most plants use photosynthesis to get energy from the sun; that's their own source, no eating other organisms necessary. Examples are grasses, flowers, trees.. most mainstream plants. There are a few exceptions, like something nasty like a Venus flytrap.

The blood disorder in which the blood doesn't clot properly is known as-


Hemophilia


Erythemia


Color blindness

Answers

The Answer is Hemophilia
Other Questions
A large bakery makes cakes for freezing and subsequent sale. The bakery can produce cakes at the rate of 484 cakes per day. The bakery sets up the cake-production operation and produces until a predetermined number (Q) have been produced. When not producing cakes, the bakery uses its personnel and facilities for producing other bakery items. The setup cost for a production run of cakes is $100. The cost of holding frozen cakes in storage is $9 per cake per year. The annual demand for frozen cakes, which is constant over time, is 54600 cakes. Assume 364 days a year and 52 weeks a year. What is the "daily" demand rate 8 reasons vehicles have changed the way we do things today? Which theory states that deviance results not only from what people do, but also from how others respond to those actions?A. strain theoryB. labeling theoryC. differential association theoryD. control theoryE. conflict theory Formula for a area of a circle Please help! Its one of my last! Please include steps as well since i have to show work. I will give brainliest. Early Mayan clothing was made of Read the passage from Mami and Papi. I wrapped my legs around her and buried my face under her chin. It felt so good to have Mai so close, so warm, swathed by her softness, her smell of wood smoke and oregano. Which phrases create a tone of contentment? Select all correct answers. swathed by her softness wood smoke and oregano felt so good* under her chin 10) Two students want to use a 12-meter long rope to create standing waves. They first measure the speed at which a single wave pulse moves from one end of the rope to another and find that it is 36 m/s. What frequency must they vibrate the rope at to create the second harmonic What type of wall divides poetry A company uses the percent of receivables method to determine its bad debts expense. At the end of the current year, the company's unadjusted trial balance reported the following selected amounts: Accounts receivable $ 382,000 debit Allowance for uncollectible accounts 570 credit Net Sales 870,000 credit All sales are made on credit. Based on past experience, the company estimates that 5% of receivables are uncollectible. What amount should be debited to Bad Debts Expense when the year-end adjusting entry is prepared 10 pts!!!!!! please answer ASAP picture and inscription includedThe wavelength of a wave is equal to the distance from one disturbance tothe next and is measured in meters. If the distance between two wavecrests is 2 m, what is the wavelength? in the morning it takes father half an hour to dress, 15 minutes to eat breakfast, and 10 minutes to fix his lunch. if he starts at 7:00, what time will it be ready to leave to work? What element is in group 17 and period 3 of the periodic table? Lydia bought a shirt at 20% off its retail price of $40. She paid 5% tax on the price after the discount. How much did Lydia paid for the shirt? Solve.10x^2 - 6 = 9x Which of the following functions is not linear? Rewrite the following passage so that it uses at least one subordinating conjunction, one coordinating conjunction, and one introductory phrase to transition between ideas.PassageThe American Dream is simply just a dream. Many people's earning potential has been stunted. It's harder and harder to find a job as unemployment rates soar. The jobs that are available pay less. Because the fish are now able to swim in deep water, their ___________ in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will _____________. **FIRST RIGHT ANSWER GETS MADE THE BRAINLIEST**Twas brillig, and the slithy tovesDid gyre and gimble in the wabe:All mimsy were the borogoves,And the mome raths outgrabe.Beware the Jabberwock, my son!The jaws that bite, the claws that catch!Beware the Jubjub bird, and shunThe frumious Bandersnatch!He took his vorpal sword in hand;Long time the manxome foe he soughtSo rested he by the Tumtum treeAnd stood awhile in thought.And, as in uffish thought he stood,The Jabberwock, with eyes of flame,Came whiffling through the tulgey wood,And burbled as it came!One, two! One, two! And through and throughThe vorpal blade went snicker-snack!He left it dead, and with its headHe went galumphing back.And hast thou slain the Jabberwock?Come to my arms, my beamish boy!O frabjous day! Callooh! Callay!He chortled in his joy.Twas brillig, and the slithy tovesDid gyre and gimble in the wabe:All mimsy were the borogoves,And the mome raths outgrabe.Explain your own interpretation of the poem "Jabberwocky." What is the story that the poem is telling, in your own words?Answer in 2-3 complete sentences. Use evidence from the poem in your answer. Science ! but ofc there is no science out of all subjects on here :Where is the most freshwater on earth found?1. Lakes and rivers2. Oceans and seas3. Underground4. Ice caps and glaciers