Biotechnology has resulted in the formation of food crops that are resistant to herbicides. how was this most likely accomplished?

a. continually applying herbicides to the plants until they developed a tolerance to them
b. halting the use of herbicides on the food crops so that they could build a tolerance to them
c. inserting genes resistant to the herbicides into the dna of the plants
d. placing a portion of the plant’s genes into the herbicides

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

Contrast how pollination is different among gymnosperms and angiosperms.

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.