Meerkats are small desert mammals that live in groups of 20-50 animals. you observe one meerkat standing upright on a stump, looking around, while other meerkats forage for food. you hypothesize that this is an example of kin selection. what additional information would you need to know to evaluate your hypothesis?
a. the body size of this meerkat relative to other members of the group
b. the gender of this meerkat as well as that of all other members of the group
c. the degree of genetic relatedness of this meerkat to all members of the group
d. all other activities of this meerkat as well as those of all other members of the group
e. the foraging success of this meerkat as well as that of all other members of the group

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

If animal agriculture was eliminated, how much grain would become available for human consumption?