The phenomenon of one species branching off from an existing species is called what? Genetic drift
Speciation
Natural selection
Founder's effect

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

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.