In which of the following scenarios does skin help to maintain body temperature? When jumping into cold water, one’s skin releases body heat into the water.
While walking during a hot summer day, sweat on the skin evaporates and cools the body.
After accidentally touching a hot cookie sheet, a blister forms on one’s finger where all the heat entered the body.
After a long run, an Olympic athlete stretches out her arms and legs.

How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground

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.

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury