Not knowing what the choice of conditions is, I would say that it would be very damp conditions on land, and if the plant photosynthesises it would be good because of 'purer' sunlight. but if show what the choice of conditions are I can give you a more accurate answer (hopefully)
A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
The Answer to this question is b
Answer: Mitochondria are shaped to maximize their productivity. They are made of two membranes. The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae.
What kind of force? There are lots of forces acting on the car at this point.
