By what method do bivalves gain food for nutrition? They absorb the nutrients they need.
They are filter feeders.
They use their radula to scrape objects to use for food.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.