Answer:
1. Energy.
2. Pellagra.
3. Niacin.
4. Beta carotene.
5. Osteoporosis.
6. Calcium.
7. Epithelial.
8. Intrinsic.
9. Sunlight.
Explanation:
1. Riboflavin and thiamin are important for energy production within cells, including nervous system cells.
2. Pellagra: the niacin-deficiency disease causing dermatitis.
3. Niacin: this vitamin can be produced in the body if enough tryptophan (an amino acid in proteins) is present.
4. Beta carotene: is one of the plant-based forms of vitamin A that must be made active in the body.
5. Osteoporosis: Thinning of bones that occurs in older age and results in serious fractures.
6. Active vitamin D acts on 3 key target organs/tissues in the body to raise the blood calcium levels.
7. Epithelial: Type of tissue that lines and protects the digestive tract and respiratory tract and is maintained by vitamin A.
8. Intrinsic factor, produced in the stomach, is needed for the body to be able to absorb adequate amounts of vitamin B12.
9. Vitamin D can be produced by exposure of the skin to sunlight.
Answer:
A. the burned forest because the disturbance has removed competitors and made more resources available
Explanation:
An exponential growth refers to a rapid growth rate within a specific time limit.
Competition for limited resources by different plant species occur within an ecosystem, a form of relationship that limits the growth of all the parties involves.
When a disturbance regime within a forest removes some of the plant species within it, other species grows rapidly as a result of more availability of resources (than usual) due to reduced competition.
Hence, the correct option is A.
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The three main worm phyla are flatworms, roundworms, and segmented worms. Roundworms have a digestive tube that has two openings. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels. These are important steps in the evolutionary development of animals.
all properties of matter have physical and chemical process'. Be more specific? Sorry I can't help more.