13. which of the following is not required by animals to control body temperature? a. animals must switch between ectotherm and endotherm methods. b. animals must be able to get rid of excess heat when temperatures increase. c. animals must be able to conserve heat when temperatures drop. d. animals must find a source of heat.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

In one or two well-crafted paragraphs in your laboratory journal, summarize the process in which normal cells become cancer cells. your paragraph(s) must include each of the terms listed below. underline each term in your writing:

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12