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Snezhnost [94]
3 years ago
9

Which is true?

Biology
1 answer:
Basile [38]3 years ago
3 0

Answer:

some chemical teactions release energy and other reactions absorb energy but all chemical reactions involve changes in energy

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larisa [96]

Answer:

C.

Explanation:

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The overall result of the proton-proton chain is that ________
Delicious77 [7]
Basically, the P-P chain turns 4 protons into: 1 neutrino, 1 gamma ray, 1 positron, 1 helium nucleus.
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7 0
4 years ago
As an infant, the ability to produce antibodies is
fiasKO [112]
A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
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3 years ago
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A. 25%<br> B. 50%<br> C. 75%<br> D. 100%
zmey [24]

Answer:

A

Explanation:

Because there 4squares and theres 1 recessive, recessive are represented with lowercase

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