Other scientists hypothesize that organic compounds could have come to

1 point
a.
riding on meteorites

b.
when stars collide and debris falls to earth

c.
primitive plants performing photosynthesis

d.
from the dust off of neighboring planets

How are cellular respiration and photosynthesis different? cellular respiration assists breathing; photosynthesis aids pigmentation. cellular respiration breaks down glucose; photosynthesis creates glucose. cellular respiration creates glucose; photosynthesis breaks down glucose. cellular respiration releases oxygen; photosynthesis releases carbon dioxide.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Explain why the plants cortex would serve as the best food source for animals