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Yanka [14]
2 years ago
15

Selective herbicides are only able to kill specific types of plants and often leave some weeds in the field to continue to grow.

Why would a farmer choose to use a selective herbicide?
Biology
2 answers:
Norma-Jean [14]2 years ago
8 0
Because they dont want to kill the grass or the plants that they want. but only to kill the plants its meant for 
Solnce55 [7]2 years ago
3 0

Answer & Explanation:

Suppose you are working as a farmer, and you want to grow corn - it's the only crop you want to grow. Of course, you'd have to make sure there isn't anything else staying with that corn, right? But why? There are many reasons as to why a farmer would choose to use a selective herbicide. One is that it reduces competition. Plant species living in the same area and using the same resources are going to compete for those resources; hence, no matter how much water you give to your corn, if there's something else using it, then your preferred crops aren't going to get enough of it. This may also determine the quality of your corn, and the amount of yield it provides. Sometimes, you might also want to get rid of annoying plants that get into your way of harvest as well. Killing a certain plant species also ensures that you have enough space for your preferred crop, as well as guaranteeing that unwanted plants won't disperse their seeds around the area and take up more space in the future.

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A. Any soil on the suspect should be collected and labeled
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2 years ago
Drag each tile to the correct box. The flu vaccine activates adaptive immunity. How does this occur? Antibodies are quickly prod
mestny [16]

Answer:

The correct order would be:

A vaccine introduces a weakened flu virus into the body.

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The immune system identifies antigens on the weakened flu virus.

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Antibodies are produced, which bind to the weakened flu virus and signal immune cells to destroy it.

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The actual flu virus enters the body, and lymphocytes recognize the antigens.

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Antibodies are quickly produced and allow the body to fight off the infection.

Vaccination or immunization is the process which helps in developing the immunity (adaptive) against a particular pathogen or microorganism.

It includes the administration of antigen, weakened or heat-killed microorganism (such as flu virus) into the patients body. Body's immune system produces naive B and T cells to eliminate the antigen.

This encounter enables the immune system to produce memory B and T cells against that particular pathogen.

In future, whenever the same antigen enters the body, the immune system gets activated quickly due to the presence of memory cells. It enables the body to produce more effective secondary response against the pathogen.

8 0
2 years ago
Read 2 more answers
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Marysya12 [62]

Answer:

Interphase

Explanation:

The phase in which most of the cells appear to be in is interphase.

This is so because cell's life is spent more in interphase and in this phase growth of cells and at the end their replication takes place. So cells get more time in interphase to grow and replicate, which makes more cells to appear to be in.

Hence, the correct answer is "Interphase".

5 0
1 year ago
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Alenkasestr [34]
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hope this helps
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2 years ago
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Answer:

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