An reaction that releases energy into the environment.
The enthalpy change (energy taken in for bond breaking of reactants - energy released for bond forming of products) can be used to determine whether a reaction is exothermic or endothermic. Since an exothermic reaction has a negative enthalpy change, it means it releases more energy than what it takes in. Hence the third statement is correct.
All living things are composed of one or more cells
Competition is the answer
Answer:
microvilli
Explanation:
having microscopic projections called microvilli. The epithelial cells of the proximal convoluted tubule are adapted.
Answer:
reproduction
Explanation:
you can live without reproduction in fact many people are incapable of it but the other things you do need to survive because they are important for most of your organs.