Why is the unit of measurement used for the distances of planets
from the Sun different from the
unit used for their sizes?

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

What does this experimental investigation lack