<span>An element is a pure substance that cannot be broken down into anything simpler by physical or chemical means.</span>
Answer: b. The use of protein as an energy source is greater for endurance atheletes than those who body build or lift weights.
Explanation:
Proteins are the biomolecules. They are composed of polymers of amino acids. It is required by the body to repair tissues and build muscles, bones, and necessary component of skin, and cartilage.
The body of athletes require more protein than body builder or weight lifters. This is because during athletic practices like running, swimming and others the muscular mass should be strong enough to conduct long continous practice. The muscle mass is build up by proteins. The muscles may experience lack of oxygen during regular practice and may become weak. Thus require more protein so that the strength may remain maintained.
Osteoporosis is <span>a medical condition in which the bones become brittle and fragile from loss of tissue, typically as a result of hormonal changes. </span>Our bones store calcium in addition to providing support for our bodies.
Intra- and intermolecular forces are considered forces of attraction or repulsion
<h3> Intra- and intermolecular forces</h3>
Generally, Intramolecular <em>forces </em>are forces that are responsibly for holding the atoms together within a <em>molecule </em>whilst Intermolecular forces are forces that can be <em>found </em>between formula molecules.
Generally, intra- and inter molecular forces are forces <em>associated </em>with
attraction or repulsion
For more information on Bonding
brainly.com/question/819068
Answer:
I believe it's Energy and organic matter can't be recycled and must constantly be supplied to an ecosystem not entirely sure though
Explanation:
