Answer:
I think I it is selective breeding also known as artificial selection
<span>In theory, to gain a pound of body weight per
week, one must consume an additional 1,000 calories per day. An approximate
3,500 calories is equivalent to a pound of body weight. If a person
continuously consumes more than 3,500 calories over a period of time it is
expected that this person will gain 1 pound of weight. <span>
<span>Nutritionists
usually suggest that an
underweight person should add between 500-1,000 calories per day to encourage a
1-2 pound increase in body weight. Because being underweight sacrifices one's
immunity and overall health.</span></span></span>
Answer:
1) pathway taken by water
water is absorbed from the soil, through the root hair cells and is transported by the xylem vessel up the stem to the leaf and/or flowers. From the leaf, some water is lost to the atmosphere as vapors escape out through the stoma present in the lower epidermal layer of the leaves.
2) water potential gradient
water potential refers to the concentration of water present. A gradient forms when there is a difference between the concentrations of water in two regions separated by a partially permeable membrane.
Hence, water moving down a water potential gradient means that it goes from a region of high water potential to a region of low water potential.
3) There are tiny openings on the lower side of the leaves called as stomata (plural: stoma) that allow for gaseous exchange to occur. These openings are controlled by guard cells which are open during the day and close during the night.
Hope that answers the question, have a great day!
