Answer:
<u>The correct answer is lactic acid.</u>
Explanation:
<u>Lactic acid</u> comes from the breakdown of glucose when there is no oxygen present (glycolytic metabolism), that is, in an anaerobic exercise such as lifting weights or running at high speed, <u>like our student in the question,</u> where there is a lot of intensity and short duration. Under normal conditions that<u> lactic acid</u> and when we are trained it is reused and there is no problem.
But when we continue with intensity an exercise, <u>lactic acid</u> will begin to accumulate by not giving the body time to remove it. This causes high concentration of <u>lactic acid</u> in the muscle fibers, which has two important consequences:
1. The enzymes responsible for breaking the glucose molecule to obtain energy are inhibited, so the energy grind of this path is cut off and as we know, if there is no energy, there is no movement.
2. It prevents calcium from joining the muscle fibers and consequently from contraction. Therefore, when there is a lot of <u>lactic acid</u> in the body, we have neither energy nor capacity to contract the muscles, this is nothing but fatigue and the best we can do is stop the exercise or activity. <u>That's our recommendation to our student after running 2 km as fast as she could.</u>
Answer:
A) C) D)
Explanation:
A C and D are it because they all have true facts about the habitat and there living in global warming
Answer:Environmental pollution is any discharge of material or energy into water, land, or air that causes or may cause acute (short-term) or chronic (long-term) detriment to the Earth's ecological balance or that lowers the quality of life. Pollutants may cause primary damage, with direct identifiable impact on the environment, or secondary damage in the form of minor perturbations in the delicate balance of the biological food web that are detectable only over long time periods.
Air pollution is the process which the substances and the energy forms are not present in normal atmospheric composition reach the atmosphere, or are present but in much lower concentrations.Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere.
More than 3,000 substances that are not part of the atmospheric composition, falling in the atmosphere can be considered air pollutants.
Some substances that are normally present in the atmosphere in a certain concentration can be considerate pollutants because their concentration is much higher than usual concentration.
Also certain substances that are normally present in certain layers of the atmosphere (e.g. ozone in the stratosphere), once arrived in the troposphere is pollutant.
Some gases, such as oxides of nitrogen may have beneficial effect on vegetation, after hydration may affect the leaf fertilizer.
The air pollutants factors can be chemical (chemicals), mechanics (particles in suspension) physical (ionizing radiation) and acoustic (noise).
Explanation:if this helped mark me brainliest
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
