Red blood cells are very small which allows them to pass through narrow capillaries, they have a biconcave shape which increases surface area allowing oxygen to be diffused more effectively, they contain haemoglobin which binds with the oxygen, and they do not contain a nucleus which leaves more space inside to hold more haemoglobin.
Nerve cells are very long to enable them to deliver messages long distances, they have synapses at the end of each cell to make sure the message can go in only one direction, and they have a myelin sheath which increases the thickness of the cell and makes the electrical impulse "jump" thus increasing the speed the messages are sent at.
Hope this helps :-)
The structure A in the question seems missing but the given answer is based on the description given in the question.
Answer:
The gaseous exchange of carbon dioxide(CO2) and oxygen(O2) occurs through small, regulated openings called stomata during photosynthesis.
Therefore the Structure A is Stomata
Answer:
Omega-3 and omega-6 essential fatty acids are readily available in leafy green plants. One way to ensure that animals raised for commercial purposes have enough of these fatty acids in their diets such that fatty acid supplementation is not needed is to allow the livestock adequate environment for natural grazing.
Explanation:
<em>Animals raised on pasture are generally healthier </em>and under less stress than those raised in confinement, making them hace omega-3 and omega-6 readily available in leafy graan plants. Pasture-based livestock farming reintegrates the cycle, putting livestock on grass or in another natural environment. These types of systems are also climate friendly.
According to the article I've read in the website of Harvard Health Publishing (Harvard Medical School), the causes of overweight or obesity have been implicated by more than 400 different genes. Genes provide overweight in so many ways like metabolism, appetite, cravings, distribution of fats, and stress eating. Although it depends on one person to another person. Researchers have said that 25% of predisposition to be overweight is accounted to genes, while 70%-80% for genetic influences. These are just some of the reason how much of your weight depends on your genes:
-For much of your life, you have been overweight
-Overweight is seen on your parents or relatives, your likelihood to be developing obesity is as high as 80% if both of your parents are overweight
Answer:
Endothermic since it takes place in the glowstick :)