What needs to present for evolution to occur

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

Which level of consumer had access to the smallest apply of energy

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only