Barnacles live in salt water attached to sturdy objects such as rocks. All the appropriate rock surfaces in a bay are already covered with barnacles. This lack of surfaces to attach to is an example of , which is a(n) factor, acting as a(n) factor that could stop the barnacle population from growing. A. space
B. water
C. climate
D. abiotic
E. biotic
F. limiting

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.