Answer this please I'll mark as brainiest!!

Why are current extinctions of concern to enviromentalists?

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?

S, tall stems (t) is a dominant trait while short stems (t) is a recessive trait. in a field of 1000 sunflowers, 820 are tall plants and 180 are short. which statement best describes the genotype of the sunflowers in the field?