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lutik1710 [3]
4 years ago
15

Water pollution can impact our health as well as the health of the environment. Which of the following human activities contribu

tes most directly to
the loss of water quality

Biology
1 answer:
snow_lady [41]4 years ago
6 0

Answer:

C. Application of toxic fertilizers to crops

Explanation:

Water pollution is defined as the contamination of water due to several human activities. Several causes of water pollution include use of fertlizers, construction of turbine, industrial waste, and sewage dumping.

Use of toxic fertizers directly affects the loss of water quality as fertilizers and pesticides are made up of chemicals such as phosphate and ammonia. The fertilizers and pesticides precipitate through the soil and mix with ground water that directly affect the quality of water. Residues of chemicals mix with river water due to flooding, excess irrigation, heavy rainfall and enter in the food chain. These chemicals are then have lethal effect in living organisms.

Hence, the correct answer is C.

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1.Which of these statements is classified as inference?
irina1246 [14]
What are the statements?

an inference is a conclusion reached on the basis of evidence and reasoning
examples:
if you see someone eating a new food and he or she makes a face, then you infer he does not like it
if someone slams a door, you can infer that she is upset about something.
4 0
3 years ago
In order for blood to always flow unidirectionally through a closed circulatory system, the ________. A. blood vessels farthest
REY [17]

The blood vessels farthest from the heart must have valves.

The valves which are present in the blood vessels prevent the backflow of the blood back into the specific organ.

There are different valves present in the heart are:

  • The tricuspid valve is situated between the right atrium and right ventricle.
  • The pulmonary valve is between the right ventricle and the pulmonary artery.
  • The mitral valve is between the left atrium and left ventricle.
  • The aortic valve is between the left ventricle and the aorta.

Other vales which are present in the blood vessels are in leg. Leg veins do require the valves. If not present the blood will go back down into the feet because of the gravity. Thus there are various valves present in the leg veins.

Valves in veins are bicuspid, meaning they have two flap-like structures that regulate blood flow in the vein.

To know more about the Valves, refer to this link:

brainly.com/question/12926213

#SPJ4

6 0
2 years ago
Please help me answer the question on the picture ..
enot [183]

Answer:

C.

Explanation:

Because of the A on top, both boxes in the first colnum should read Aa.

3 0
3 years ago
Read 2 more answers
Muscle, cartilage, bone, and heart all develop from the ____ layer of the blastocyst. ectoderm mesoderm endoderm lipoderm
trasher [3.6K]

Answer:

The correct answer is mesoderm.

Explanation:

A germ layer is a layer of cells that forms during embryo development. In triploblastic animals, there are three layers. Mesoderm between ectoderm and endoderm two layers, forming triploblastic. Germ layers give rise to all tissues and organs by the process of organogenesis.

Mesoderm give rise to muscles, cartilage, bone, heart, connective tissue, adipose tissue, lymphatic system, circulatory system, dermis, genitourinary system, notochord, and serous membranes.

Thus, the correct answer is mesoderm.

6 0
4 years ago
Read 2 more answers
Which organ system is responsible for regulating body temperature
nexus9112 [7]

Answer:

Simplified answer: it's actually many systems that work together, just in different ways!

Explanation:

A large part of the body that is responsible for the regulation of temperature is the nervous system. The hypothalamus, which is a portion of the brain, controls the regulation of body temperature. The process that allows the human body to maintain its core temperature is called thermoregulation. The hypothalamus sends signals to various parts of the body, such as the glands and nervous system, when its core internal temperature begins to fluctuate too high or low.

However, the endocrine and the excretory systems also play a role in the regulation of body temperature.

Hope this helped!

6 0
4 years ago
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