In 1980, a long dormant volcano, Mount St. Helens in Washington state, erupted violently. The eruption wiped out the forested landscape and the wildlife. Months after the initial disturbance, the ash and rock strewn surface began to undergo primary succession.
Which organisms would you predict to be the MOST LIKELY to have appeared first?
A
grasses
B
lichens
С
mosses
D
shrubs

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.