Alleles are a variant of genes. Each human has two
I know its not d but it might be c or a
The savanna grasslands of Africa is an example of a biome that supports large populations of grazing herbivores, few birds etc. The savanna supports grazing animals such as wildebeests, antelope, zebra and many other grazing species. There are few species of birds because the landscape there is almost void of trees. Only a few species of acacia dot the extensive grassland.
Answer:
B
Explanation
They have to realease things somehow
