2. Which of the following represents the “selective pressure” in the scenario above? a. the weeds themselves c. reproduction of offspring
b. genes for resistance d. Roundup chemical
_ 3. Refer to the Roundup scenario, and identify the “genetic diversity”
a. Roundup chemical c. reproduction of offspring
b. genes for resistance d. the weather condition
_ 4. Refer to the Roundup scenario and identify the group that was “selected against”
a. weeds with the resistant gene c. weeds lacking the resistant gene
b. Round up chemical d. the ancillary plants

also:

Refer to Roundup scenario and identify the group that is “selected for”
a. weeds lacking the resistant gene c. weeds with the gene for resistance
b. Round up chemical d. the grass

oxidation

explanation:

answer

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!

i believe it would be c: tons.