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Ira Lisetskai [31]
3 years ago
12

5. What is the main force that causes a protostar to become a star?

Biology
1 answer:
ValentinkaMS [17]3 years ago
7 0
Stars begin to form from clouds of gas in space. The cold temperatures and high densities (compared to elsewhere in space, but would be considered a vacuum on Earth) of these clouds allow gravity to overcome thermal pressure and start the gravitational collapse that will form a star.
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Niclosamide prevents ATP generation in mitochondria. You would expect this drug to be effective against _____. a) Mycobacterium
AlexFokin [52]

Answer:

Helminths

Explanation:

Niclosamide is an anti-helminth drug. It works by inhibiting ATP generation in the mitochondria. ATP which is a major source of energy for cellular organisms is deficient thereby hindering or stopping metabolic processes and then death. Helminths in which Niclosamide is effective against include Pin worm, Round wo,Beef tapeworm( Taenia saginata) etc. The drug is taken orally.

6 0
4 years ago
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Which of the following is a terrestrial biome? <br> A. tundra <br> B. benthic zone <br> C. estuary
choli [55]

The answer should be A. tundra.

6 0
4 years ago
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The abiotic and biotic<br> factors of an area and their<br> interactions<br> [Choose<br> &gt;
grandymaker [24]

Answer:

Explanation:

It is D

7 0
3 years ago
Based on their observations and the data they collected, the Grants concluded that evolution by natural selection had occurred i
aalyn [17]

Answer:

C. Beak size is an inherited trait in the finch population under study.

D. Birds that could eat larger, tougher seeds survived and reproduced during the drought.

E. Beak size varies among the birds in the finch population under study.

Explanation:

The presence of genetic variations among the individuals of a population is required for natural selection to be operative. Natural selection targets the beneficial genetic variations present in the population. Natural selection refers to the differential reproductive and survival success of organisms of a population due to some beneficial genetic traits. These organisms with beneficial genetic traits are able to survive and leave more progeny under prevailing conditions.

If the natural selection has occurred in the ground finch population for the beak size, the beak size should be a genetic trait since natural selection works on genetic traits only. The finch population should have variations with respect to the beak size. The finches having the larger beak size that enabled them to feed on larger, tougher seeds should have higher survival and reproductive fitness during the drought.

Under these conditions, natural selection would favor the finches with larger beak size and would eventually result in an increase in the average beak size of the future generations.

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3 years ago
Binary Fission and Mitosis are similar processes. One way they are different is that:
nadya68 [22]
i think the answers b

hope this helps!
8 0
3 years ago
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