Answer:
The answer is A) Immune System
Answer:
Organ system — a group of organs that contribute to specific functions within the body. Examples include:
Gastrointestinal system
Nervous system
Organ — a group of tissues precisely arranged so that they can work together to perform specific functions. Examples include:
Liver
Brain
Tissue — a group of cells with similar structure and function. There are only four types of tissues:
Epithelial
Connective
Muscle
Nerve
Cell — the smallest living units in the body. Examples include:
Hepatocyte
Neuron
Chemicals — atoms or molecules that are the building blocks of all matter. Examples include:
Oxygen
Protein
Essential nutrients are the main source of energy for our body. Our body cannot make (or make enough of) these nutrients so we must consume them through different foods. That is why they are referred to as “essential”, because we can’t live without them nor can our body fully produce them.
<span>In addition to being necessary for respiration, __Oxygen_____ also provides UV radiation protection.
it provide protection from UV radiation in the form of ozone a layer that surrounds the earth
so correct option is C
hope it helps</span>
Answer is A. Being any kind of obese is life threatening but it does not ensure a heart attack. If you try your best or get medical help you can still lose weight.
