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3 years ago

What makes stars produce energy? gravity hydrogen nuclear fusion nuclear fission

Biology

2 answers:

maksim [4K]3 years ago

7 0

Answer:

Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium. These and other processes in stars have lead to the formation of all the other elements.

HYDROGEN

Explanation:

Hope this helps!

kvv77 [185]3 years ago

4 0

Energies produce a star centre or core where pressure are enormous and temperatures reach 27 million Fahrenheit Miss causes nuclear fusion Atoms of hydrogen are rip apart and fuse to form helium these reactions release of a vast amount of energy which makes the star shine

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Chemical substances in plants that act as internal stimuli are called

Ronch [10]

I believe the answer is hormones. correct me if i'm wrong.

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2 years ago

When sweat cools on the skin, removing heat and cooling the body, what process is occurring? A. Parasympathetic nerve conduction

zavuch27 [327]

Answer:

Homeostasis

Explanation:

Temperature homeostasis

3 0

2 years ago

tWhich organs are part of the excretory system? a)stomach, esophagus b)kidney, bladder c)large intestine, small intestine d)gizz

Ronch [10]

Answer/Explanation:

b) kidney and bladder

Kidneys are the main organ in the excretory system and the bladder stores the urine in the body. These are two of the organs that make up the excretory system.

4 0

3 years ago

Meiosis and fertilization are important for the survival of many species because these two processes result in —

lidiya [134]

Answer:

Reproduction.

Explanation:

Reproduction is the process through which species continue their generation.

8 0

2 years ago

Before returning to the heart, blood from the digestive tract first passes through the..

loris [4]

Answer: Liver

Explanation:

The hepatic portal system of liver connects the capillaries of the gastrointestinal tract to the liver. The nutrient rich blood from the gastrointestinal tract reaches the liver.

The blood that is returned back to the heart is first bought to liver and then it is returned back to the heart.

From the liver after processing the blood goes into heart for further processing.

Hence, the correct answer is option d

7 0

3 years ago