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JulsSmile [24]
4 years ago
5

Pesticides are used to protect crops from insects and other pests. But sometimes pesticides can be as harmful as they are useful

. How can pesticides be harmful?
Biology
2 answers:
Semmy [17]4 years ago
7 0

They can harm animals and humans. What ever digests the crops that pesticides are used on can get sick and diseased. Pesticides are dangerous for humans and animals and can kill.


Dvinal [7]4 years ago
3 0

Answer:

Pesticides are chemical or biological agents that are able to restrict the growth of pests in a agricultural field. These pesticides prevents the growth of insects or pests whose life cycle is mainly dependent on plants and those which are dependent for food requirement on plants. The pesticides making crop pest resistance can be harmful to animals and humans as these are toxic in nature. These pesticides can contaminate the air, water and soil in the regions where they are applied and causes respiratory, cardiac and water borne diseases in humans. These pesticides being toxic remains undigested and circulated in a food chain can be responsible for biomagnification. Biomagnification affects the growth and abundance of species in all trophic levels of the food chain but the highest trophic level is most affected because of accumulation of pesticides in the organisms reaches at higher concentration, responsible for mortality.  

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How does self-concept affect communication?
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Self-concept affect communication as

<u>C. Your self-concept will help to determine how you communicate.</u>

Explanation:

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  • One's self-concept affects one's perception, attitude and behavior, which can be demonstrated during the process of interpersonal communication.
  • The self-concept is, of course, only one of many factors that affect managerial thinking, feeling, and behavior, but it is undoubtedly one of the most powerful influences on many important behaviors.
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4 0
3 years ago
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what are two characteristics a bird population must have to survive a rise in temperature? in what way are they likely to change
Ad libitum [116K]

Answer:

1. Heat tolerance: This will allow birds to maintain a body temperature around 10 degrees below the high air temperature.

2. Thermoregulation capabilities: Having thermoregulatory plasticity allows birds to adapt to warm conditions by increasing their evaporation rate and, therefore, increasing heat loss.

Explanation:

Today, it is extremely important for fauna to adapt to high temperatures that will become the "new normal" because of climate change and global warming.

Some species of birds have the ability to thermoregulate by behavioral or physiological processes. This will allow them to cope with increased temperatures and adapt to new climates. Other birds, however, are not able to withstand high temperatures, which could lead to high mortality and, therefore, increased population declines.

To adapt to these conditions birds should have a <u>high heat tolerance</u> threshold, <u>this will allow birds to maintain a body temperature around 10 to 15 degrees below the high air temperature</u>. For example, if the air temperature is around 30 ºC, their body temperature could remain below 20 ºC.

Also, they should have thermoregulation capabilities or plasticity. <u>This means that through different methods, such as reducing metabolism or increasing their evaporation rate, they will be able to cope by losing or exchaning heat with the environment.</u>

5 0
4 years ago
Classify Identify some beverages that are mixtures. Classify them as solutions, suspensions, or neither. Explain your classifica
Katarina [22]

The beverages chosen include:

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<h3>What is a Suspension?</h3>

This refers to a heterogeneous mixture which contains solid particles which are big enough to dissolve. An example is lemonade due to the presence of lemon pulp particles which cannot be dissolved mostly because of its membrane.

On the other hand, a solution is a homogeneous mixture in which the solute dissolves completely in the solvent(water). An example is Tea which comprises of the tea and water .

This therefore makes the answers given as the most appropriate choices in this example.

Read more about Suspensions here brainly.com/question/2437517

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8 0
1 year ago
Describe how the following would change if you were to extend your arm at the elbow (that is, stretch the biceps).
Fittoniya [83]

Answer:

a. The biceps would relax causing it to increase in length

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c. The alpha motor neurons would contract or decrease.

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The skeletal joints in the human or animal body are controlled by muscles. Examples of these muscles are the biceps and triceps found in the human arm. They control the elbow joint with the biceps in front and triceps at the back of the elbow.

When the arm is extended from the elbow, the biceps relaxes or extends while the triceps contracts. This increases the length of the biceps and reduces the triceps length.

8 0
3 years ago
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