You maintain internal body temperature through negative feedback mechanism. Which of the following is a response to decrease body temperature when you are in warm/hot environment? A) Our muscles contract to cause shivering. B) Your blood vessels constrict to conserve heat. C) Sweat gland function reduces. D) Your blood vessels dilate to release heat.

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

What percentage of light hits earth's surface directly?

What noticeable trend from this graph might be used to make a conclusion?