Because of their biological point of view which showing their structural resemblance (morphological resemblance) and can interbreed under natural conditions(favour condition) which allow them to produce fertile offspring freely.that's why Asian and African elephants have capable to survive.
Virus infection domain cell
earthquakes produce both body and surface waves which is the fast sesmic wave!!
hope this helps!!
Answer:
#male gametes are formed
#generative nucleus divides
#fertilization takes place
#pollen tube grows
# zygote is formed
#embryo is formed