What do you mean by Swayam a that is a door
b this is a door
C that that are doors
d these are doors

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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.

Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans