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Arlecino [84]
3 years ago
13

How do dirty wells and ponds harm us?

Biology
1 answer:
shusha [124]3 years ago
3 0
Organic chemicals can enter the grond water and contaminate private wells through waste disposal etc.
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List the structures in the circulatory system the blood travels through from the vena cava to aorta.
Jobisdone [24]

Explanation:

The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).

8 0
1 year ago
Why is it inportant to the mouth and stomach are near the start of the digestive system
Serjik [45]
Because the mouth breaks down the food and the stomach uses acid to break food down even more...
6 0
3 years ago
Describe what messages are sent by the nervous system when you go outside wearing a sweater on a very hot day.​
mr_godi [17]

Answer and Explanation:

In homeostatic control processes any deviation from the norm sets into motion the appropriate corrective mechanisms which restore the norm. This rectification occurs through negative feedback. When you go outside wearing a sweater on a hot day, the body sends messages to the CNS and the following occurs:

  • The superficial blood vessels vasodilate so that more blood flows near the surface. This encourages heat loss.
  • Sweating and panting. Sweat secreted by the sweat glands evaporate from the surface of the body as it absorbs latent heat.
  • The metabolic rate falls so that the body generates less heat. You also become less active
  • Behavioural response by seeking cooler areas, cold drinks or removal of the sweater.
5 0
3 years ago
10. Lichens are among the first organisms to
lara [203]

Answer:

The correct option is H) these acids change the environment.

Explanation:

Soil can be described as the part of the environment where plants grow. In primary succession, life stars arising in an area which has no soil and only rocks, This is possible because lichens are the organisms which can grow on the rocks. Lichens secrete certain acids which break down these rocks and hence soil begins to form when these rocks break. This makes it possible for other plant species to grow on these lands.

8 0
3 years ago
This organelle is a fluid that maintains the internal pressure in the cell
zimovet [89]
Cytoplasm maintains the internal pressure in the cell. 
6 0
3 years ago
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