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makkiz [27]
3 years ago
13

Which problem arises when the same crop is grown year after year in the same field?

Biology
1 answer:
miskamm [114]3 years ago
6 0

Answer:

The crop has an increasing need for fertilizers, herbicides, and pesticides.

Explanation:

I just took the test, lol.

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Glaciers act as<br> in the water cycle, because they<br> can store water for long periods of time.
frosja888 [35]

Answer:

Reservoirs

Explanation:

Glaciers serve as reservoirs in the water cycle since they can store water for long periods of time. A biogeochemical or nutrient cycle is composed of

  1. reservoirs, in which the biogeochemical or nutrient is stored, and
  2. the several processes by which the biogeochemical or nutrient is cycled between its reservoirs.
5 0
3 years ago
People with diabetes must monitor their blood glucose levels. Most do this by checking it themselves, often several times per da
Ket [755]
Penisilin shot, or drink juice, eat an apple, cereal, anything with sugar.
5 0
3 years ago
What are the three terms used to locate the body parts of a frog?
zaharov [31]

Answer:

Explanation:

the heart pumps blood throughout the body, and the lungs aid in breathing. the body parts that are found on frog are the heart, the liver, and the stomach, etc.

8 0
3 years ago
Stars which can be seen all year long are called stars.<br> True or False
drek231 [11]

Answer:

False

Explanation:

There are stars that we can not see because they are not in our galaxy. Even though we cannot see them they are still considered stars.

5 0
3 years ago
Birds and mammals have a four-chambered heart, but most reptiles have a three-chambered heart. How does this fact affect the con
eduard

Answer:

The animals present body structure is due to evolution. It is seen in each part including the structure of the heart. The vertebrate heart becomes complex from a simpler form.  

Invertebrates, the heart of fishes is two-chambered having one auricle and one ventricle. The deoxygenated blood gets purified in the gills. They are aquatic and no lungs for breathing. The hearts pump a mixture of oxygenated and deoxygenated blood to the body.  

The amphibians and reptiles have 3 chambered heart as they lead terrestrial mode of life. The gills modified into the lungs.  The left auricle receives pure blood and the right auricle receives deoxygenated blood. The blood purified in the lungs and in the ventricle, both types of blood get a mix. The ventricle pumps the mixed-blood throughout the body.

In the case of birds and mammal, the heart is 4 chambered and the oxygenated and deoxygenated blood are separated. These two are higher vertebrates. No mix of pure and impure blood, the body receives only the oxygenated blood.

This shows to construct the phylogenetic tree of vertebrates - the fishes should be in the bottom, and above it amphibians, reptiles, then, mammals and birds on the top branch of the tree. As the chambers and structure of the hearts modified one after another.

6 0
3 years ago
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