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Fittoniya [83]
3 years ago
5

Toxins are non-living biological agents produced by living plants, animals, or bacteria. an example of a toxin is:

Biology
1 answer:
zaharov [31]3 years ago
5 0

Answer: Botulinum toxin

Toxins are non-living biological and chemical agents produced by living microorganisms from animals and plants that can cause harm to humans, plants and animals. An example of toxin is botulinum toxin produced by the bacterium Clostridium, which is a neurotoxic protein that prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction and causes flaccid paralysis.

Moreover, toxin are more closely related to chemical warfare agents that can only affect those who are exposed to the agent and that they are not considered as transmissible disease.

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3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each
HACTEHA [7]

Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.

3 0
3 years ago
How many kilometers north of the equator is washington, D.C.
liberstina [14]
The answer to the problem is 2,677 mi
7 0
3 years ago
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What are four types of chemical weathering
Setler [38]

Answer:

the four types of chemical weathering are:

oxidation

hydrolysis

hydration

carbonation

8 0
3 years ago
In light-independent reactions, ________ and ________ are used to react.
Reptile [31]

Answer:

sorry idk the answer  :(

but what I know is that ;<em>The light-independent reactions use the ATP and NADPH from the light-dependent reactions .</em>

Explanation:

Hope it helps you !

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I LOVE YOU FOREVER IF YOU AMSWER THIS!!! &lt;3 &lt;3 &lt;3
Taya2010 [7]
The correct answer is <span>Ka = [H3O^+][HSO3^-]/[H2SO3] </span>
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