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ale4655 [162]
3 years ago
13

How does phosphorus reach surface waters​

Biology
1 answer:
egoroff_w [7]3 years ago
5 0

It is an essential element for plant life, but when there is too much of it in water, it can speed up eutrophication (a reduction in dissolved oxygen in water bodies caused by an increase of mineral and organic nutrients) of rivers and lakes. Soil erosion is a major contributor of phosphorus to streams.
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Sometimes, pregnant women are very emotional. This is believed to be caused by extra estrogen and progesterone that are released
Strike441 [17]

Activational effect is the correct answer.

Activational effect is an impermanent hormonal effect that leads to a change in physiological activity or behavior in both humans and adult animals. For instance, when testosterone levels rise in male songbirds they become more aggressive and tend to engage in courtship behavior. Also, a pregnant woman may get more emotional than usual due to an extra level of progesterone and estrogen during pregnancy.  

3 0
3 years ago
What can farmers use to prevent the harming of beneficial insects?
siniylev [52]

Answer:

Natural pest control

Explanation:

Because its a way to be eco friendly using natural sources which does not harm insects

6 0
3 years ago
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Which statement is true for both plant and animals cells?
bulgar [2K]

Answer:

Nuclei and vacuole

Explanation:

But in animal cell vacuole are temporary exist

3 0
3 years ago
Which is a weakness of traditional food webs when they are applied to complex ecological problems?
Anna007 [38]

A food web does not represent all the links in an actual ecosystem.

Explanation:

A food web is also called food cycle. It is understood by the natural interconnection of chain and their graphical representation.  The concept is given by Charles Elton. He mentioned about the concept of food cycles in Animal Ecology but later this food cycle is replaced by food web.

Food web are limited representation of eco system. Ecologists can keep together all life forms broadly into one of the two categories which is called tropic levels.  These two categories are autotrophs and heterotrophs  

6 0
3 years ago
Too see evolution in action, you should look at organisms with:
Lady_Fox [76]
idk sry I don’t want to give u wrong answer
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