Why are massive main-sequence stars not
likely to have planets that contain life?
1. The life zones around these stars are too
small.
2. These stars would sweep away all of the
material from which planets could form.
3. These stars are on the main sequence for
too short a time to alllow life to evolve
4. These stars are too hot to allow water to
exist as a liquid on any planets that might
form.
5. These stars are almost always binaries
and planetary orbits are unstable around bi-
naries.

Answers

Answer 1

Answer:

5

Explanation:


Related Questions

ASAP WILL GIVE BRAINLIEST

The image below shows how wolves and dogs compare to some other animals in the levels of classification.



Based on the chart, how are fish and dogs related?

They belong to the same kingdom but different phyla.
They belong to the same phylum but different classes.
They belong to the same kingdom and class.
They belong to the same phylum and class.

Answers

Answer:

B.

Explanation:

Answer:

Was it b?

Explanation:

Zoe drew a diagram to compare monotreme and marsupial
mammals.
Which label belongs in the area marked Z?
gestation period lasting several months
o includes spiny anteaters
O offspring develop in pouch
O females lay eggs

Answers

Answer: Its c offspring develope in pouch.

Explanation:

I took the test

Answer:

offspring develop in pouch

Explanation:

9
Which is the basic functional unit of life?
organism
organ
tissue
cell

Answers

Answer:

cell

Explanation:

The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.

Answer:

D.) Cell

Explanation:

On Edge 2020... just took test!

which of the following is a renewable resource?
A. Sunlight
B. Natural gas
C. Copper
D. Coal

Answers

Answer:

Out of the following, the renewable resource is Sunlight.

I think the right answer is Sunlight.

Additional Information:

Those resources which can be reuse again and again is called renewable resources

Hope it will help

Explain in detail the life cycle of the metamorphosis of amphibians.

Answers

Amphibians, like frogs and newts, have a slightly more complicated life cycle. They undergo a metamorphosis (a big change): they are born (either alive from their mother or hatched from eggs)

What is currently happening with Mount Etna?

Answers

Answer:

As Italy’s National Institute of Geophysics and Volcanology (INGV) explains on a recent blog post, the nascent eruption began on the night of May 29. Starting off by producing a thick column of ash rising from the New Southeast Crater, it gave way on May 30 to a far more lava-heavy display in the area, featuring two fissures blenching out lava.

Answer:

There is currently no eruptive activity at the volcano involving fresh lava and monitoring signals do not suggest an immediate change likely; only a weak thermal anomaly continues to be present from the southeast crater complex.

Explanation:

Density-dependent factors affect:
•larger populations more because resources are already stretched thin.
•larger populations more because predators are a major concern.
•smaller populations more because there is a greater chance of wiping out the entire population.
•smaller populations more because they tend to be upper-level predators.

Answers

Answer:

The third is correct

Explanation:

Usually, a small population like rabbits can be hunted down and eaten by predators like a fox or foxes, and eventually, the fox or all of the foxes will kill the population of rabbits to extinction.


Indicate whether or not the following functions are performed by the excretory system.
____excreting waste materials
____excreting blood
____maintaining pH balance
____maintaining body temperature
____maintaining salt balance
____maintaining hormone levels
____maintaining water balance

Answers

Answer:

1. yes

2. no

3. yes

4. yes

5. yes

6. no

7. yes

Only excreting blood is the function that is not performed by the excretory system.

What do you mean by the Excretory system?

The excretory system may be defined as the system that consists of a pair of kidneys, ureters, and urinary bladder. It removes wastes from the body.

Excreting waste materials, maintaining pH balance, maintaining body temperature, maintaining salt balance, maintaining hormone levels (aldosterone), and maintaining water balance are all the functions that are performed by the excretory system.

Therefore, only excreting blood is the function that is not performed by the excretory system.

To learn more about the Excretory system, refer to the link:

https://brainly.com/question/1001081

Write about the following words using the format provided ( state if term is know by another name or expression; state its composition; state its function; state its location; state its significance )
Example: Cell membrane - ( Plasma Membrane; Phospholipid bilayer...... )

Words: Cell membrane, nucleus, chromatin, nuclear envelope, nuclear pore, nucleolus, cytoplasm, mitochondrion, ribosome, endoplasmic reticulum, golgi complex, vacuole, lysosome, centriol, cell wall, plastid, chloroplast, chromoplast, leucoplast​

Answers

sorry :(

Explanation:

During the last century, both global temperatures and men’s average height have increased. Do these correlated trends mean that the increase in men’s height caused the increase in global temperature? yes ___ no ___ Explain why or why not.

Answers

No


There’s no direct correlation between the Earth temperature and the height of men. In fact, the countries that have the tallest men, are also usually the coldest

Which organism would not carry out cell respiration
A. Oak tree
B. Mushroom
C. Anaerobic bacterium
D. Bear

Answers

Answer:

D. Bear

Explanation:

The answer is bear because a bear is an animal. Everything but animals can carry out cellular respiration.

So i forgot what the genetic code is and how its read can somebody please be kind and help me..

Answers

Answer:

i d

Explanation:

DescriptionThe genetic code is the set of rules used by living cells to translate information encoded within genetic material into proteins. adenine(A), cytosine (C),guanine(G), thymine(T) are the “letters” of the DNA code.

An organism's traits are controlled by alleles it inherits from Its parents. Some alleles are dominant
while others are
hybrid.
recessive.
genomic.
sex-linked.

Answers

The answer is recessive

Skin color and height are polygenic traits which means


many genes code for one trait


one gene codes for each trait

Answers

Answer:

Many genes code for one trait

Explanation:

Poly >> Many

1-True or False: Human activities such as nitrogen fertilizer can upset the balance of the nitrogen cycle.
True
False

Answers

Answer:

True because it disturbs the balance of the soil.

The answer is true_____________

Morning glories are flowering vines that will climb up a trellis or other support by wrapping tendrils around it. What kind of tropism causes the
morning glories to twine around the support this way?
A. phototropism, because the light pulls the morning glories upwards
O
B. gravitropism, because gravity helps the morning glories orient themselves in space
O
c. thigmotropism, because the morning glories twine around the support when they touch it
D. nutrotropism, because the curliness of the morning glories depends on the nutrients in the soil

Answers

I think the answer should be c.

What kind of energy is this?
The iron you used to iron your clothes.

Answers

Answer:

conduction

Explanation

conduction energy is through touching the object

What is the cause of Angelman Syndrome?

a) A mutation that occurs randomly after birth or due to a viral infection in the mother during pregnancy.

b) The shutting off of the paternal chromosome and the deletion on Chromosome 15 from the mother.

c) The shutting off of the maternal chromosome and the deletion on Chromosome 15 from the father.

d) A large deletion of chromosome 15 that is inherited from each parent.

Answers

Answer:

Angelman syndrome is caused by a genetic mutation on chromosome 15.

Explanation:

Angelman syndrome is caused by a genetic mutation on chromosome 15. The name of this gene is UBE3A. Normally, people inherit one copy of the gene from each parent, and both copies become active in many areas in the body. Angelman syndrome occurs when only one copy of the gene is active in certain areas of the brain.

why do animals and plants need nitrogen

Answers

Answer:

They need Nitrogen to make Amino acid, DNA but the nitrogen in the atmosphere can't be used directly. Some nitrogen fixing bacteria fix it then it is able to use for plants and animals.

hope it helps!

Answer:

Plants and Animals need Nirogen and its Sufficent

Explanation:

Plants need Nitrogen especially Crops because they give protein with the help of nitrogen by the help of Rhizobium Bacteria.

With This Protein, Animals ( Herbivores) eat this for energy which contains nitrogen

A student examines a sample of pond water under a microscope and observes a single-celled heterotrophic eukaryote swimming through the water. To which of the following Kingdoms does this organism most likely belong?
Protista
Fungi
Plantae
Bacteria

Answers

Answer:

The answer is C. Plantae

Plantae is a taxonomic group that includes land plants and green algae.

The kingdom that does this organism most likely belongs to the Fungi. Thus, the correct option for this question is B.

What are Eukaryotes?

Eukaryotes may be defined as the type of organisms that have a well-defined nucleus and other membrane-bound cell organelles in their cells. These types of organisms have compartmentalization which facilitates each and every specific function.

According to the context of this question, only fungi are the only organisms that are single-celled eukaryotes that are heterotrophic in nature.

Protista is also a kingdom that has single-celled organisms but these organisms are autotrophic and heterotrophic both. Plantae is generally autotrophic in nature. While bacteria belong to the prokaryotic origin.

Therefore, the kingdom that does this organism most likely belongs to the Fungi. Thus, the correct option for this question is B.

To learn more about Fungi, refer to the link:

https://brainly.com/question/10878050

#SPJ2

How many Coronavirus strains are in the World and tell me 3 Names of the strains​

Answers

Answer: The 3 The names of them are

MERS-CoV, (MERS)

SARS-CoV,  (SARS)

SARS-CoV-2

Directions. Choose TWO organisms below. Determine the likelihood of all the possible
offspring of the organisms chosen. Explain your answer.
Organism #1 Genotype Bb
Organism #2 Genotype Bb
Organism #3Genotype. bb
Reproduction type: Sexual
Reproduction type: Sexual
Reproduction type: Sexual
Type your response below
Directions Choose TWO organisms below. Determine the likelihood of all the possible
offspring of the organisms chosen. Explain your answer.
Organism #1 Genotype HH
Organism #2 Genotype: Hh
Organism #3 Genotype: hh
Reproduction type: Asexual
Reproduction type Asexual
Reproduction type Asexual
Type your response below

Answers

Answer:ghjhjjhvvvjohvjb

Explanation:

PLEASE HELP I WILL BE GIVING THE BRAINLIEST AND 15 POINTS!!!!!!!!
Liam knew that all living things have common characteristics. His new baby brother made him think about how different all the types of living things were. Which of the following is not a common characteristic shared by all living things?

A. made of a cell or cells
B. made of similar chemicals
C. respond to surroundings
D. spontaneously generate

Answers

Answer:

Option D) - Spontaneously generate.

Answer:

Spontaneously generate

Explanation:

all living things have cells, are similar chemically (like have water) and respond to surroundings.

Spontaneous generation refers to an obsolete body of thought on the ordinary formation of living organisms without descent from similar organisms. The theory of spontaneous generation held that living creatures could arise from nonliving matter and that such processes were commonplace and regular.

PLZ ANSWER FAST!!

Which of these is an example of genetic modification:

a. Mapping the genome of the giant squid

b. Comparing the genes of children to their parents

c. Getting a flu shot

d. Adding a gene for mold resistance to corn DNA

Answers

Answer

D, genetic modification is a technique to change the characteristics of a plant, animal or micro-organism by transferring a piece of DNA from one organism to a different organism.

Explanation:

(mark as brainliest please)

Changes in genetic data lead to gene modification. Adding a gene for mold resistance to corn DNA is an example of genetic modification. option D is the correct answer.

 

What is genetic modification?

Genetic modification is a process in which the genes of an organism are modified. This can be done by base insertion or deletion or by any other environmental factor. Genetic modification can be done artificially. CRISPR-Cas9, gene editing, etc. are some examples.

This is done to get more productivity in crops, to reverse a genetic disease, etc. An example is adding a gene for mold resistance to corn DNA. Due to this gene modification, the corn will produce some proteins that will protect it from mold attack. Other options are not correct for the statement, as there is no change in gene activity.

Hence, the correct option is to add a gene for mold resistance to the corn. Option D is the correct answer.

To learn more about genetic modification, refer to the following link:

https://brainly.com/question/21411587

 

#SPJ2

Need help with #6 please:)

Answers

Answer:

high porosity

you need high porosity and high permeability for have an aquifer, which would made the water flow.

How do bacteria and viruses spread from one person to another?

A. Sneezing and coughing.

B. Contaminated food or water.

C. Contact with other people's blood or body fluids.

d. All of the above.​

Answers

Answer:

d

Explanation:

Answer:

D

Explanation:

i have no clue how to answer this

Answers

I believe this question is trying to get you to realize the difference between acquired traits(one you get through doing something during life) and heritable traits(ones from Mom/Dad). For example, I really wish I was 6 foot 4... but the height trait comes genetically from your parents since it is coded in my DNA how tall I will be, therefore this trait must be passed down genetically and somewhere down the evolutionary tree the humans in the region which my family comes from was better off being short. An example that comes from acquired traits could be muscularity... my parents are both not very muscular but throughout my lifetime I enjoy working out and have become much more muscular, no matter how much your parents or grandparents lift weights YOU won't change so that change must be acquired through aging during your lifetime. Now the amount of muscle your body can put on is a heritable thing but that is beside the point. Hope this helps :)

If your phenotype is free earlobes and free earlobes is dominant what is your genotype

Answers

If your phenotype is free earlobes which is dominant then your Genotype can be Ff or FF.

Answer:

ff

Explanation:

hope this help

The United States _____.


sent the first man into space

sent the first artificial satellite into space

launched the first space station, called Skylab

was the first to send man to the moon

HELP ASP

Answers

They sent the first man into space

Answer:obviously they sent the first man into space

Explanation:

According to “Past Climate Changes on Earth,” what changes to the atmosphere caused temperatures to increase, making the Eocene such a warm time in Earth’s history?

Answers

Answer:

The most important factor was the accumulation of greenhouse gases, especially methane and  carbon dioxide.

Explanation:

The Eocene climate began with warming climate at 56 million years ago (Mya) and finalized at around 49 Mya ago. It is believed that during this period the greenhouse gases increased the temperature on the Earth's surface. This hypothesis is supported by evidence that indicates the melting of the ice cap in the poles.

Other Questions
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