Hello!
1) A small group of birds arrives from South America.
2) Geographic isolation
3) Changes in gene pool
4) Behaviors from interbreeding
I hope it helps!
Answer:
d. They are often keystone species
Explanation:
Top predators in an environment are the largest predators and sits on the top (apex) of the food chain in an ecosystem which do not have any natural predators.
As the top predators relative to its abundance has disproportionately large effect on its natural environment, they are the keystone species most of the time.
Hence option d. They are often keystone species is the right option.
The correction option is B. The plants that belong to phyllum anthophyta are heterosporous, that is, they produce both male and female reproductive organs separately. Fruits grow when the male gamete fertilizes the female ovary. Their fruits are always fleshy with seeds inside them. A good example of a plant that belong to this phylum is pawpaw.
I believe the answer is C.
Step 1. mRNA is transcribed in the nucleus, exits to the cytosol through, and binds to a ribosome.
Step 2. Protein synthesis occurs at the rough endoplasmic reticulum.
Step 3. The protein travels by vesicle from one organelle to another inside the cell.
Step 4. The Golgi apparatus processes, sorts, and tags the protein for delivery to its final destination.
Step 5. Exocytosis.
