Answer:
Most plant can't grow in darkness because they need energy from light to carry out photosynthesis
Usually when you are trying to figure out different possibilities of offspring using punnet squares, 4 genotypes can be figured out. I think that it also depends on how you are finding out the different genotypes for offspring.
No. You should have more fish in the water than wolves in the woods, or more birds than worms. Whenever you have an ecosystem, usually more organisms are present if they use less energy, so there are more blades of grass than rabbits.
Scientific theories are modified because they are out of date. Scientists are constantly discovering new things, and there are often amazing breakthroughs in science, so quite often, hypothesis are in need of an update.
Lister discovered the relationship between cleanliness and infection rate. Hope this helps.