B I think I really just took an educated guess to help
Expression of each gene requires a unique combination of
multiple transcription factors. Expressing a gene all the time, regardless of conditions,
Pax-6 is highly conserved and shows shared evolutionary ancestry. cytoplasmic
determinants that are distributed unevenly in the unfertilized egg inductive signals from one cell to another. Gradients of molecules in developing tissues. <span>the products of regulatory genes.</span>
Answer:
Some animals weather rocks by scraping them as they feed. Other animals change Earth's surface by burrowing into it and moving material. Too many animals in one place can destroy most of the plants, leading to faster erosion.
If too many animals graze the same land area, the animals’ hooves pull plants out by their roots. A land is overgrazed if too many animals are living there. Grazing animals can cause erosion if they are allowed to overgraze and remove too much or all of the vegetation in a pasture.
Explanation:
Hope this helped :)