Answer:
Pulmonary artery.
Explanation:
Arteries carry blood from the heart to other organs.
A doctor need to study chemistry: To know and understand the chemicals processes of matter in the body work which is for example insulin, DNA etc. and to study of all processes in a living organism. The three reasons to study chemistry is because chemistry can be useful in clearing up the natural world, preparing people for career opportunities and producing informed citizens. Some outcomes of modern research in chemistry can lead to technologies that aim to benefit the environment, preserve and produce energy, progress human life and multiply our knowledge of the universe. To help the citizen be a more informed citizen is to let them know how things work makes better decisions and use them better
The generation of an action potential in a neuron requires the presence of<span> voltage-gated channels, which are </span><span> a class of transmembrane proteins that form ion channels that are activated by changes in the electrical membrane potential near the <span>channel.</span></span>
Answer: It would unbalance the ecosystem.
Due to the fact that if some species die off, the other species that rely on those species for food or protection would loose that food/ protection which may lead to their extinction and their extinction would lead to another extinction and so on.