D. An element donates an electron to another element.
Plants look green because they absorb all light except the green one.
you can prove it as when you give plant green light only ....it will not produce...or produce a very little.....so the answer
D - an increase in tree cover in the tundra.
Producers get most of their energy from the sun as they are autotrophic, meaning that they contain chlorophyll which they use to make their food through photosynthesis.
RR x rr
or if you're using the letter "t" to represent the alleles TT x tt
Homozygous means that a particular gene has identical alleles on both chromosomes. TT is for a dominant (stronger) trait and tt is for a recessive (weaker) trait.
Hope this helps! :)