Answer:
A point mutation is a change in the base sequence of a DNA molecule.
Explanation:
Answer:
D
Explanation:
because trees take in carbon dioxide and produce oxygen.
Answer:
The answer should be C.
An energy pyyramid shows how the energy "flows" from organism to organism as it goes up.
Yes it is absolutely true that each lung is fed oxygen by a separate bronchus. There are actually two lungs and two bronchi. Each of the two lungs are safeguarded by the two ribcages as
they are placed within the rib cages. The lungs actually consists of elastic
sacs that contract and expand for taking in and releasing air. This way oxygen
is passed into the blood and carbon dioxide is taken out from the blood and
passed out. This is also the main function of the lungs.
I might be wrong, but I think the answer to this question is D.
