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leva [86]
3 years ago
8

Hydroelectricity is electricity generated by hydro-power from the gravitational force of falling or flowing water. It is the mos

t widely used form of renewable energy, accounting for nearly twenty percent of global electricity generation. Why hasn't hydroelectricity replaced more traditional sources of electricity?
A) It requires a lot of workers.
B) There are very high maintenance costs.
Eliminate
C) Hydroelectricity is not very reliable energy.
D) Construction of a hydro-power plant is very expensive.
Biology
2 answers:
hammer [34]3 years ago
8 0
I think it's either C or D,,Hope that helps
son4ous [18]3 years ago
5 0

D, Hope this helps also there are answers on Quizlet

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Question 1 of 10
Sati [7]

Answer: Option A) Parathyroid glands

Explanation:

The Parathyroid gland located in the neck region helps in the secretion of an hormone called Parathormone.

This hormone helps to raise the levels of calcium ions in the body, by preventing the loss of calcium ions through urine, and also preventing excess deposit of calcium ions in the bone, thus regulating bone density.

6 0
3 years ago
What can help digestion give some examples and explain in short.
Katen [24]

Answer:Terms in this set (10)

Mouth

Teeth chop food & saliva breaks down food

Esophagus

Tube that connects mouth to the stomach (peristalsis)

Stomach

Organ that releases acid and juices & mixes with food to create chymes

Small Intestine

Greatest amount of digestion takes place (if taken out, it would be 21ft long) (takes 4hrs to get to the small intestine)

Liver

Gland that releases bile and filters poisonous waste

Gall Bladder

Small organ that stores bile (you can live without it)

Pancreas

Gland that produces digestive enzymes and insulin

Large Intestine

(colon) Tube extending the small intestine where your indigestive food is ready for elimination

Rectum

Short tube at the end of the large intestine

Anus

Opening to the outside of the body

Explanation:

The organs of the digestive system are the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and anus. Recognizing how these organs work together to digest food is key to understanding how digestion works.

7 0
2 years ago
Read 2 more answers
Meiosis is of evolutionary signicance as it
Ludmilka [50]

Answer:

d

Explanation:

four daughter cells are produced in meiosis

3 0
3 years ago
4. Which Petri dishes showed the LEAST growth? Why?
Lubov Fominskaja [6]
No picture is shown in your question
6 0
3 years ago
In a multicellular organism, organs carry out a variety of life functions. In a single-celled organism, these functions are perf
vivado [14]
The correct option is B.
 A multi cellular organisms has many cells which carry out various function and which are organised into tissues, organs and organ system. A unicellular organism on the other hand has only one cell with different cell organelles. Thus, in unicellular organisms, it is the cell organelles that carry out different functions. <span />
6 0
3 years ago
Read 2 more answers
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