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BigorU [14]
3 years ago
14

Sam had a disease that weakened his heart so it could not pump properly. This heart problem

Biology
1 answer:
Kamila [148]3 years ago
6 0

Answer:

2.  muscular system and cardiovascular system

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What adverse effects does covering the land with concrete and asphalt create?
Aloiza [94]
<h3>Adverse effects of covering the land with concrete and asphalt is Natural resources are depleted.</h3>

  • Asphalt is a petroleum-based product. Concrete requires rock, sand and a fabricated cement component to strengthen the material hold the pavement material.
  • Fortunately, industry innovation has led to meaningful progress toward resource conservation.
  • Road construction companies have developed ways to reuse existing concrete and asphalt by remixing it materials.

Learn more about Asphalt and concrete effect on environment here:

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2 years ago
Food being digested in the stomach is in a highly acidic environment. when the food is released from the stomach into the small
Elanso [62]
The small intestine is highly alkaline
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3 years ago
Is the following an example of a. Negative feedback loop b. Positive feedback loop Hydrochloric acid and pepsin are enzymes secr
Finger [1]

Answer:  This is a positive feedback loop.

Explanation:

The protein digestion in the body is an example of the positive feedback. The gastric secretions is stimulated chiefly by the action of three chemicals.

These chemicals are acetylcholine, histamin and gastrin. These chemicals stimulate the parietal cells to secrete HCL and intrinsic factors.

The chief cells secrete pepsinogen in response to the gastrin and ACh. As the dietary proteins are digested, it breaks down the amino acids and peptides.

This stimulates the G cells of the stomach to secrete more gastrin. This is how the positive feedback loop for the protein digestion works.

5 0
3 years ago
a warming global climate can create hot and dry regions. it can also contribute to natural CO2 emissions. For example, lighting
motikmotik

<em>b. wildfires</em>

<em>b. magnified the greenhouse effect</em>


The first blank is pretty simple; if lightning (electricity) strikes something flammable, like a forest, a fire is sure to ensue. This fire will obviously spread to the other trees and cause a massive wildfire.

The second blank is the greenhouse effect. The greenhouse effect is said to have caused our warming climate, which makes sense because heat from the sun gets trapped in our global "greenhouse", or the lower atmosphere. Lower atmosphere is key here because a large event like a massive wildfire can add some more heat to the atmosphere and contribute to this effect. A wildfire may seem like a minor event on a global scale, but it will do more damage to the atmosphere than you think!

9 0
3 years ago
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Why do termites live in colonies instead of individually?
Anestetic [448]
It's just like wolves, they can get more work done if they work together.
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3 years ago
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