Which of the following ideas are supported by Darwin's observation of local variation among tortoises in Galápagos Islands?

A) artificial selection

B) adaptation

C) acquired characteristics

D) tendency towards perfection

If cyclin was always available in the cell at high concentrations, what affect would this have on the cell cycle?

What is primary consumer and give and example of one

Which male accessory structure is inferior to the urinary bladder and surrounds the superior portion of the male urethra?

How do the bats move to meet their needs from surroundings and do they move fast or slow?

Which statements accurately describe hot spots? Check all that apply. Hot spots can cause volcanoes. Hot spots can cause geothermal activity like geysers and mud pots. The Hawaiian Islands formed over a hot spot.

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.