Answer:
1) NH3->Product
2) NH4->Reactant
Explanation:
Reactants are the substances in with you start the chemical reaction with (before the arrow)
Products are the result (after the arrow)
The answer is d. semi permeable nature of the membrane
Answer: Not getting enough physical activity can lead to heart disease—even for people who have no other risk factors. It can also increase the likelihood of developing other heart disease risk factors, including obesity, high blood pressure, high blood cholesterol, and type 2 diabetes.
Darwin suggests that an organism's struggle for existence is part of what determines why some species' characteristics survive and others become extinct. These adaptations illustrate how unique characteristics of particular organisms have developed, allowing them to thrive in their specific environments.
Metabolic rate and production of by products of the ice fish increases with temperature
