Which of the following statements about the tundra is not true? A) tundra means “treeless land “
B) plants and animals in the tundra have adapted to the extreme climate
C) temperatures in the tundra range from extreme highs to extreme lows
D) the alpine tundra can be found on mountaintops

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.

Nucleoplasmin is a nuclear protein. this protein was divided into two segments and linked to the same large cytoplasmic protein. what is the name of that large cytoplasmic protein

Which characteristics describe a spiral galaxy?