Answer:
Explanation:
You have external defense systems, which include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria. ... The skin stops pathogens from entering the blood, at least when you're not bleeding. The tears, mucus, and cilia trap them and help push them back out of your body.
pls mark as brainliest.................................
The right option is; D) cork cambium—increase in stem thickness
Cork cambium is a tissue that is located in the stem of many vascular plants. The main function of the cork cambium is to produce the cork which is a strong protective material on the plants outer surface and also to produce a layer of cells that contain chlorophyll on its inner surface.
Enzymes are a substance produced by a living organism, which acts as a catalyst to bring out the specific biochemical reactions they are biochemical reactions... I hope this helps
It was carried there by wind or waves
Answer:
Good question. A lipid made of a phosphate group and two fatty acids; consists of a hydrophilic polar head and two non-polar hydrophobic tails; forms cell membranes. Many of this type of lipid serve as chemical messengers or as parts of the cell membrane; examples include cholesterol, testosterone, and estrogen
I think the answer would be B.
Hope it helps lol