Why is coal considered to be a nonrenewable energy resource? A.
Sunlight is the original source of energy for coal
B.
The burning of coal could cause environmental pollution
C.
Once coal is mined, it can take millions of years to be replaced
D. Coal is abundant, but is very expensive to mine from underground

Approximately what wavelength of light is best absorbed by chlorophyll a

Select all that apply. careful listening skills include: refraining from interrupting the speaker taking quality notes making an effort to understand maintaining eye contact with the speaker

3. in the fruit fly, recessive mutation brown, b, causes brown color of the eye and absence of red pigment. recessive mutation p of another independent gene causes purple color of the eye and absence of brown pigment. the cross of a brown-eyed female and purple-eyed male produced wild type eyes. what will be the colors and their ratio in f2?