Improved growth rate and improved resistance to various diseases are among the goals of
a) animal breeders
b) ethologists
c) wildlife biologists
d) animal groomers

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

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.

Agroup of organisms that changes over time is said to