True or false:
1. transmission of the nerve message between neurons is electrical in nature.
2. a negative feedback loop works by turning off the stimulus that initiated the feedback loop
3. blood ph level is maintained by the respiratory system

Which of the following forest management practices is best for reestablishing areas of forest?

Answer questions from exploring further

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.