D. it is cool because when u exercise u swet. so it is better in the cold.
Answer:
Transport oxygen.
Explanation:
Red blood cells transport oxygen throughout the body with the help of hemoglobin.
Plants and animals could not live without nitrogen<span>. It is an </span>important<span> part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy. hope this helps!</span>
Answer:
Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others. ... Through this process of natural selection, favorable traits are transmitted through generations.
it is trapped beneath non porous rocks
