In a tropical rain forest, the layer found by the leafy tops of tall trees is called the what and the layer of shorter trees and vines is called the what?

Which best describes the scientists who have contributed to our current body of knowledge? A. Almost all males B. People of all races and genders C. Almost all Europeans D. Currently only South Asians

Bill expends 2,500 kilocalories per day. what amount of kilocalories will be from basal metabolism

Which element of variation would not be affected by adding the data value 4 to the data set {3, 5, 6, 8, 9, 10, 13, 14}? A. the lower quartile of the data set B. the median of the data set C. the upper quartile of the data set D.

When referring to an animal's body temperature, the term ectothermic means Question 3 options: the animal's body temperature must stay above 100°F.

How could the skin respond when the human body is too cold? A. Blood flow to the skin increases. B. The body begins shivering to produce heat. C. Sweat is secreted on the surface of the skin. D. Muscles in the skin cause the hair to stand up.

If there is a possibility of four different genotypes in the offspring that result from a dominant-recessive inheritance, and if the couple has four children, would they definitely have children with one expressing each genotype?

The ovaries are located in the ___ cavity.

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. Eliminate C) osmosis. D) a passageway.

As ocean water in a tide pool warms and evaporates, the remaining water becomes a. cooler. b. saltier. c. calmer. d. darker.

Drake is comparing time people spend playing games on Xbox versus Playstation. In his study, individuals ages 10 - 15 are given Xbox's and individuals ages 16 - 25 are given Playstations.