Answer:
Without the tree the cow couldn't live.
Explanation
The cow breathes in oxygen and breathes out carbon dioxide. The tree uses cellular respiration and photosynthesis in order to take carbon dioxide (which the cow produces) and make it into oxygen (which the cow needs to breaths).
Answer:Margulis
She is the one who discovered it
Plato:
Honeybees both directly and indirectly benefit humans. We directly use the honey they produce, and we also depend on them to pollinate crops. Bees also pollinate other plants that provide several indirect benefits to humans. These benefits include reducing carbon dioxide in the atmosphere and providing food for the herbivores on which we depend.
Nitrogen cycle
Carbon cycle
PLEASE MARK BRAINLIEST
Recombinant DNA techniques, for example, increase milk productions in cows. Another example would be, transgenic salmon grow faster than wild salmon.