What is the answer to this

How many chromosomes are in a gold fish?

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?