The best descriptions are those that correctly describe the terms or concepts ecology.
<h3>Which descriptions best fit the given terms?</h3>
The study of living things and their non-living is ecology.
The description of a given term provides information about that term or concept.
The best description of the given terms are as follows:
- Mutualism - a relationship where both organisms benefits
- Commensalism - a a relationship where one organism benefits and the other is unaffected
- Producers - organisms that make their own food
- Food web - show energy flow in an ecosystem
- Biome - a large area defined by climate and organisms that live there
- Stability - ability of an ecosystem to respond to change
- Exponential - growth pattern at constant rate
- Carrying capacity
- Food chain
- Limiting factor
- Parasitism
- Trophic levels
- Biodiversity
- Abiotic factors
- Population
- Climate
- Biosphere
- Consumers
- Keystone species
- Community
Therefore, the best descriptions are those that correctly describe the terms or concepts.
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The correct option is c. (20 m) .
As the formula to calculate wavelength is :
wavelength = wavespeed / frequency
The responses observed in type IV hypersensitivities result from the action of T cells and phagocytes.
Hypersensitivity IV type, also called delayed-type hypersensitivity (DTH), involves T cell-antigen interactions that cause activation and secretion of cytokines. This type of hypersensitivity requires sensitized lymphocytes that respond 24–48 hours after exposure to soluble antigens. A type IV hypersensitivity reaction is a cell-mediated reaction that can occur in response to contact with certain allergens, resulting in what is called contact dermatitis, or in response to certain diagnostic procedures such as the tuberculin skin test. Certain allergens need to be avoided to treat this condition. Type IV hypersensitivity response is observed results from the action of T cells and macrophages while other types are mediated by antibodies. This reaction occurs at least 1–3 days after the initial exposure. Type IV hypersensitivity is the mechanism of many autoimmune disorders.
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<u>Answer</u>: Option 3 Coevolution
<u>Explanation</u>:
<em>Coevolution</em> is a process in which two individuals reciprocally affect each other's evolution. In this process the interacting species exert selective pressures on each other thus, affecting their evolution. Due to this reciprocal adaption they become so close that the evolution of one species is affected by the other.
Answer:
1. Ends of the respiratory branches are called alveoli.
2. C. To control blood flow to different areas of the body depending on activities
Explanation:
1. The trachea divides into left and right primary bronchi which in turn divide multiple times upon entering the lungs and make the bronchial tree.
The final branches of the bronchial tree are the terminal bronchioles that lead to alveoli. The alveoli are the balloon-shaped structures and serve as the site of gas exchange between the blood and inhaled air.
2. The opening and closing of sphincters of capillary beds regulate the direction of blood flow. The opening of sphincters allows the blood to flow into associated branches of capillary beds while closed sphincters direct the blood from arterioles to venules via thoroughfare channel.
This local change in blood flow is responsible for the autoregulation of blood flow to different tissues to match their respective metabolic demands. For example, during physical activity, more blood is directed to skeletal and cardiac muscles.