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3 years ago

Compare mechanical, chemical, and legislative control to the use of nonnative species as a control method.

1 answer:

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Non native species are organisms that do not naturally occur in a given area. They may have been transferred either accidentally or deliberately from their place of origin to the new area through human activities.

Non native species may become invasive species if they cause harm to the economy, human health, or environment.

Control methods used to eliminate invasive species are:
1) mechanical - physically removing the invasive species or changing the habitat condition of the affected area.
2) chemical - using of pesticides, fungicides, or herbicides to kill off invasive species.
3) legislative - introducing the natural enemy of the invasive species. It may be a predator or parasite that is from its native range.

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Suppose that you and a friend see brightly colored pigeons like these at a nature park. Because pigeons are usually gray and whi

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Answer:

See the complete question and the answer below

Explanation:

Suppose that you and a friend see brightly colored pigeons like these at a nature park. Because pigeons are usually gray and white, you both wonder where these colors came from. Suddenly, your friend says, "I have a theory. These birds must get their colors from eating food that has the same colors."Is your friend's explanation a scientific theory? Give reasons to explain your answer

The answer is no. My friend's explanation is not a scientific theory.

A scientific theory is a tested and proven phenomenon. In order for a statement to become a theory, it must have been tested through experimentation by several independent researchers and found to be true. A mere statement based on perception with little or no experimental test is just a hypothesis and not a theory.

Instead of my friend to have said, "I have a theory", he should have said, "I have a hypothesis".

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3 years ago

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Answer:

5. Ecologist

6. Decomposer

8.scavenger

9.carnivore

11.ecosystems

13 abiotic factors

Explanation:

I'm not sure on though 13

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3 years ago

Which muscle is used when giving your grandmother a kiss on the cheek?

Simora [160]

Sternocleidomastoid

Explanation:

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3 years ago

Reproducing plant and animals Which have desirable traits is called

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3 years ago

You have arrived on the scene of an incident involving an explosion. People in the immediate vicinity are all experiencing runny

Sergio [31]

Answer:

Nerve agent

Explanation:

A nerve agent is a chemical in which on exposure to humans affects the functioning of the nervous system. These chemicals are known to disrupt the process by which messages are transferred to the organs from the nerve. This disruption occurs by blocking the activity of acetylcholinesterase, which is responsible for the catabolism of a neurotransmitter, acetylcholine.

On exposure to a nerve agent, the muscles of the body become paralyzed and early symptoms is production of excess mucous such as in runny nose, pupil constriction and also difficulty in breathing.

These agents are sometimes used in chemical warfare. Examples include sarin, tabun etc.

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3 years ago