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Gnesinka [82]
3 years ago
13

What causes the cloud of gas and dust to condense and turn into a star?​

Biology
2 answers:
vlabodo [156]3 years ago
4 0

The tremendous heat given off by the nuclear fusion process causes the gas to glow creating a protostar. This is the first step in the evolution of a star. The glowing protostar continues to accumulate mass.

hope this helps ^^

qaws [65]3 years ago
3 0

Answer:Gravity

Explanation:

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As scientists have developed more productive crop varieties, farmers have switched from growing many traditional varieties to ne
valina [46]

Answer:

The correct answer is option A. the potato gene pool.

8 0
3 years ago
Which component decreases the activation energy of a chemical reaction?
BabaBlast [244]

Answer:

Presence of an enzyme

Explanation:

Enzymes are the biomolecules present in cells. The enzymes serve to catalyze the chemical reactions that occur inside the cells. Enzymes speed up the rate of the chemical reaction and allow the formation of products at a fast rate. This is done by lowering down the activation energy that is required to begin a chemical reaction. This energy breaks down the older bonds present in substrates so that new bonds can be formed. Enzymes lower down the activation energy to speed up the reactions.

4 0
3 years ago
1. Why is more energy needed during exercise?
lilavasa [31]

Answer:

1) The muscles need more energy as the breathing rate and heart rate increase to bring more oxygen into the body and remove carbon dioxide. More energy is needed to supply muscles with extra oxygen and remove carbon dioxide.

2) Glycogen in the muscles.

3) Rate and volume of breathing increases,

Cardiac output is increased,

Blood flow from nonessential organs is provided to the working muscle.

4) Muscle cells respire anaerobically when there is a temporary deficiency of oxygen during high intensity exercises.

5) Lactic acid.

6) Muscle fatigue is when the muscle cannot perform as normal (decline of ability) due to a result of vigorous exercise.

7) A temporary oxygen shortage in the body tissues due to exercise.

8) Oxygen+ Lactic acid goes to Carbon dioxide + water.

9) The body continues to respire in order to get more oxygen and remove carbon dioxide.

10) The heart rate and breathing rate stay high after exercise in order to repay the oxygen debt and remove carbon dioxide. They also have to reduce the acid based balance in the muscles to neutral.

11) Lactic acid can also removed by being converted into Glycogen. This involves the muscles as glycogen is a product of the muscles

Hope this helps!

8 0
3 years ago
4. How do the finches on the different Galapagos Islands differ from each other?<br> Explain why.
kenny6666 [7]
On the Galapagos Islands, Darwin also saw several different types of finch, a different species on each island. ... Finches that ate small nuts and seeds had beaks for cracking nuts and seeds. Darwin noticed that fruit-eating finches had parrot-like beaks, and that finches that ate insects had narrow, prying beaks.
6 0
3 years ago
HELP ME !!!!HELP ME PLEASE
postnew [5]

Answer:

Abiotic is basically a non living factor so the answer is

D. Sunlight, temperature , conductivity, dissolved oxygen.

All other options contain one biotic or living factor like algae, star fish and crabs these aren't Abiotic.

3 0
3 years ago
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