Describe natural selection

Answers

Answer 1

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

Explanation:

Answer 2
best suited to the situation survive, and the ones that aren’t die

Related Questions

What characteristic do insects, centipedes, and millipedes share? Check all that apply
three pairs of legs
one pair of wings
one pair of antennae
two body sections

Answers

Answer:

One pair of antennae

Explanation:

They have more than three pairs of legs, centipedes and millipedes do not have wings, and they have more than two body sections.

Answer:

C is correct

Explanation:

the mushroom is most likely
A. a primary consumer
B. A secondary consumer
C. A decomposer
D. A producer​

Answers

Answer:

c. decomposer

Explanation:

hope this helps.

why is water pollution a density independent factors?

Answers

Answer:

Any factor in the environment that does not depend on the number of members in a population.

Explanation:

Density independent limiting factors also cause population sizes to increase. For example, the water from a flash flood increases the growth of vegetation, thereby providing more food for primary consumers in the ecosystem.

pair of identical chromosomes (chromosomes that contain the same genes) from each parent, which all organisms produced by sexual reproduction receive

Answers

I think the answer is alleles

Answer:

the correct answer is homologous pair

Explanation:

what is the best definiton of genetically motified foods? HURRYYY!!! please and thank youuuu

Answers

Answer:

GMO, or genetically modified foods, are foods that are messed with genetically by science to better benefit the human race. For example, scientists might replace genes that give corn a lower harvest, with a different gene in corn that makes a higher amount of harvest.

Explanation:

You could also look it up. Just search "GMO".

If the outside temperature gets colder, a dolphin's body temperature will:
O get warmer
O get colder
• stay they same
NEXT QUESTION
ASK FOR HELP

Answers

Answer:

The answer is get warmer.

Explanation:

Since dolphins are considered mammals, they are warm-blooded, and therefore cannot survive very long in the cold. Their body temperature is designed to counteract the temperature fluctuations outside.

I hope this helps! :)

What might happen when a Hox gene turns other genes on or off?

Answers

Answer:

They can alter the phenotype of an organism

Alicia created a physical model to show how one of the human body systems works. She first adds sand and pebbles to a glass of water. Then, she uses filters to separate the solids from the water.
Which organ(s) serve(s) a similar function in the human body?

A) the heart
B) the glands
C) the kidneys
D) the stomach

Answers

Answer:

(c) the kidneys

Explanation:

Your kidneys remove wastes and extra fluid from your body, basically filtering fluids

The answer is C

Explanation: the kidney’s job is to filter your blood as well as removing any impurities and waste products.

Hope that helps! ^_^

ANSWER ASAP please!!

Answers

Answer:

to control what enters and leaves the cell

Explanation:

The nucleus controls the functions of the cell and a cell wall provides structure for a plant cell.

3. to control what enters and leaves the cell

An oak tree can be a home for animals like squirrels, birds, etc. as well as provide oxygen for the environment. This is an example of a _____________: the role an organism plays in the environment.

Answers

Answer:

Commensalism

Explanation:

Commensalism is the condition in which one organism is harmed and the other is neither harmed nor benefited. The animals are being benefited but the tree is neither benefited nor harmed.

State the functions of the following PARTS OF AMNIOTIC EGG 1 Embryo 2 Shell 3 Shell membrane 4 Air sac 5 Albumen 6 Yolk 7 Yolk sac 8 Amnion 9 Chorion 10 Allantois

Answers

Answer:

1.Embryo is an underveloped form of the bird at its early state of development usually few weeks old like a week.

2.Shell acts as it's outer covering.

3. Shell memberance acts as a semipermeable memberance for substances to leave or enter the Shell.

4. Air Sac contains a means of respiration for the Embryo.

5. Albumen is the part of the egg reach in protein or the white part you see after cooking.

6. Yolk contains the nutrient

7. Yolk Sac contains yolk

8. Amnion acts as shock observer, liquid suspension of the embryo and as a waste absorber.

9. Chorion is the outer embryonic memberance.

10. Alantios is a memberance that contains blood vessels that feeds the embryo,

Explanation:

Refer to the answers memberance is usually a surface that is permeable to certain substances.

This illustration shows a strand of mRNA and the complimentary tRNA molecules that can base pair with the mRNA codons. What is the correct sequence of amino acids?

Answers

Answer:

Since you haven't attached the illustration for finding out the amino acid sequence from the mRNA sequence from, I'll explain the general principle for it.

The mRNA represents the code for translation into specific amino acids which will form the protein. A group of three bases, a triplet code, is referred to as a codon. The tRNA is responsible for recognizing the codon and matching the anticodon that will attach to the mRNA and generate the chain of appropriate amino acids.

Hope that answers the question, have a great day!

Giraffes with short necks lived in arid regions and fed on grasses. Over time, grasses disappeared, forcing giraffes to eat from trees. Mutations in the genome led to some giraffes inheriting the trait for long necks. Over time, there were more giraffes with long necks in the region. What are the two reasons for the change in the population of giraffes?

Answers

Answer:

Two reasons are that the grasses they ate disappeared which caused some to die, but some lived and ate from trees and reproduction and such happened.  

Explanation:

i need points bro

Give an example of an unethical but not illegal dilemma you could face in your future profession- do not use one of the given examples.

Answers

Answer:

Some immoral things done to boost the sale of the company

Explanation:

An act is said to be 'Unethical' when it is incorrect morally. While an act is said to be 'illegal' when it is incorrect legally. For example -

If a person works in the sales and marketing department of a company, then his/her motive is to boost the sales of a company at any cost. in purview of this, a sales manager indulge in several activities where they take credit of other's company branding, they pull sicky of each other, also they sometime sabotage the work of their competing company etc. All these actions are unethical  but not illegal

DNA is a molecule that stores____information in the cells

Answers

Answer: instructions

Explanation: trust me

Answer:

genetic

Explanation:

Which of the following accurately describes one part of the hierarchy of organization in living systems?
A : Tissues are made up of various cell types.
B : Organs are made of of various organ systems.
C : Cells are made of various organs.
D : Tissues are made up of various organisms.

Answers

Answer:

A : Tissues are made up of various cell types

Explanation:

B : can't be correct because a system is made of many things, so an organ system is made of many organs. As such, it doesn't make sense for organ systems to make up organs.

C : can't be correct because cells make tissues, and tissues make organs, so cells can't be made of organs

D : can't be correct because an organism is the whole living being. Organisms are made of organs, and organs are made of tissues, so tissues can't be made of organisms.

That just leaves A!

Marijuana is a(n)
a. depressant
b. stimulant
c. hallucinogen
d. opiate

Answers

Answer:

Marijuana is a stimulant.

Answer: Marijuana is a stimulant.

how did astronmers use technology to indenifty characteristic of the crab nebula

Answers

Answer:

technology that detects radio waves identified a pulsar at the center of the nebula

Explanation:

This detected radio source, determined to be pulse-like, was identified to be coming from a pulsating star called a pulsar. The charged particle emitted by the rapidly rotating star is emitted as synchrotron radiation in the radio spectrum. The pulsation was discovered to be at the rate of 30 times a second. Crab nebula is a nebula cloud made from a supernova

Answer:

B. technology that detects radio waves identified a pulsar at the center of the nebula

Explanation:

Eng 2021

What is the purpose of a trophic pyramid?

Answers

Explanation:

An ecological pyramid (also trophic pyramid, Eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem.

WILL MARK BRAINLIEST


plz help

Which of these is an inherited trait?
1 point
braided hair
pierced ears
ability to read
eye color
2. What the main source of oxygen in an ecosystem? *
1 point
combustion from cars
respiration by plants
photosynthesis by plants
respiration by animals
3. Trout are found in rapidly flowing streams that have high levels of oxygen, stony bottoms, and an abundance of aquatic insects. These streams represent a trout’s ______________. *
1 point
niche
habitat
biome
community
4. Which combination of sex chromosomes results in a male human being? *
1 point
XX
XY
YY
NEITHER XX OR YY
5. Which of the following is not a function of the skeletal system? *
1 point
supports the body
works with other body systems to allow movement
manufactures new blood cells
sends signals to the brain
6. Which of the following pairs of structures share the function of reabsorbing water into the body? *
1 point
lungs, stomach
bone marrow, small intestine
hypothalamus, pancreas
large intestine, kidney
7. A trait the helps an organism to survive and reproduce is called *
1 point
variation
species
adaptation
selection
8.

Which structure belongs ONLY in the part of the circle labeled plant cells? *
1 point
cell membrane
cell wall
cytoplasm
vacuole
9.

According to this energy pyramid, what would the snake be classified as? *
1 point
producer
herbivore
carnivore
omnivore
10, Which of these does a virus need to multiply? *
1 point
chloroplasts from a host cell
a host cell to provide oxygen
new ADP from a host cell
a host cell to replicate the virus's DNA
11. Which of the following shows the correct order from smallest to largest? *
1 point
community ->organism->population->ecosystem
organism->community->ecosystem->population
population->ecosystem->community ->organism
organism->population->community->ecosystem
12.

According to the above Venn diagram, which feature does a Bald Eagle have in common with an American Robin? *
1 point
square tail
sharp talons
curved beak
perching feet


20 POINTS WILL MARK BRAINLIEST ANSWER

Answers

1. eye color is an inherited trait
2.photosybtheis by plants
3. either biome or habitat
4.XY
5.manyfactures new blood cells
6. large intensity and kidney
7.idk

Answer:

1. Inherited trait: Eye Color

2. main source of oxygen: respiration by plants

3. These streams represent a trout’s habitat

4. male human: XY

5. manufactures new blood cells

6. large intestine, kidney

7. variation

8. cell wall

9. carnivore

10. a host cell to replicate the virus's DNA

11. organism->population->community->ecosystem

12. sharp talons (Im not sure)

I hope this helps you! :)

17. If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as
an ore. This happens because
a. the mineral can no longer be mined at a profit
b. the mineral has lost its usefulness
c. the demand for the mineral has decreased
d. none of the above

Answers

Answer:

A. the mineral can no longer be mined at a profit.

Explanation:

In the case when the separating cost a mineral from the wastage cost so this should occur at the time when the mineral should not be longer be mined at the profit.

What is a mineral?

The mineral should arise at a non-organic element or the compound that should be along with the internal structure also the attribute of the composition of the chemical should be considered. Its examples should be mics, quartz, etc. Now in the case when the separating cost a mineral from the wastage cost so it should be too big so option a is correct.

Learn more about mineral here: https://brainly.com/question/3570118

State the three parts of the cell theory.

Answers

Answer:

The three parts of the cell theory are: cells are the smallest unit of life; all cells come from preexisting cells; and living thing is made up of one or more cell.

With more carbon in the atmosphere, what do you think will happen to the environment

Answers

Answer:

Global warming

Extra carbon dioxide in the atmosphere will increases the greenhouse effect. More thermal energy is trapped by the atmosphere, causing the planet to become warmer than it would be naturally. That increases the Earth's temperature which is also called Global Warming

How are earthworms and fish similar?

Answers

Materials eliciting increased tongue flicking and prey attack in garter snakes were isolated from both earthworm and fish prey. New extraction methods based on chloroform-methanol mixtures are valuable adjuncts to the more typical aqueous preparations. Both high- and low-molecular weight components from earthworms and fish were active. The similarity between the active chemicals in these two classes of prey was established using several methods of analysis.

Answer:

cc

Explanation:

5 sentence summary of the immune systems function

Answers

Our immune system’s function is to defend our body against pathogens. Two of the most important parts of our immune system are phagocytes and lymphocytes. Our phagocytes ingest the pathogens in a process called phagocytosis. Our lymphocytes produce chemicals called antibodies which can help to kill pathogens, kill pathogens themselves or neutralise any toxins produced. Sometimes, our lymphocytes create memory cells which remember the pathogen and retain in our blood even forever in some cases, to make us immune to the disease caused by the pathogen.

I really hope this helped! And please mark brainliest.

Which organisms are the best example of producers in a food web?


killer whales


zooplankton


krill


marine phytoplankton

Answers

Marine phytoplankton

♡ The Question ♡

-Which organisms are the best example of producers in a food web?  

* ୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Answer ♡

-Marine Phytoplankton!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Explanation/Step-By-Step ♡

-No Explanation/Step-By-Step provided!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ Tips ♡

-No tips provided!

What determines the current phase of the moon?

Which side of the moon is facing earth

The earths seasons

How much of the sunlit part of the moon is visible

The 23.5 degree tilt of the Earths axis

Answers

Answer:

the answer is C

Explanation:

...............

Where is DNA located in your body?

Answers

Answer:

DNA is in the nucleus of nearly every cell in your body.

Explanation:

DNA is housed in the nucleus because it is the genetic material and needs to be protected.

Answer:

The DNA is located in the nucleus.

Explanation:

Humans and animals are EUKARYOTES which means we have a nucleus, where the DNA is stored. PROKARYOTES do not have a nucleus to the DNA is stored in the cytoplasm.

~Anna

Where, in the cell, are proteins/enzymes constructed from the mRNA code

Answers

Answer:

Ribosomes

DNA is stored in the nucleus, while proteins are assembled from free amino acids in the cytoplasm in structures called ribosomes

What happens to 90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer

Answers

Answer:

90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer is lost as heat or used up by the body.

Explanation:

In the pyramid of energy, energy decreases as an organism move from one tropic level to the next. Only 10% of the energy at any trophic level is transferred to the next level.

The 10% consumed by an organism is stored in the body, the remaining 90% is lost as heat or used up for growth, reproduction, etc

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