imagine that you are a peruvian scientist studying the effectsof el nino. Your hypthesis is that El Nino is having negative bioolgical effects on the marine envirorment along the peruvian coast. what kind of data would you collect to test your hypthesis?

i'd say that the moon rock is about 2.2 billion years old.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

answer( increase) their individual contractile activity;