1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pani-rosa [81]
3 years ago
8

A disadvantage of solar energy is the need for _____. a supplemental cooling unit to prevent the water from getting too hot a sp

ecial fee for the energy collected by the unit time-consuming daily maintenance of equipment a supplemental heating unit for cloudy days, winters, and nighttimes
Biology
2 answers:
kozerog [31]3 years ago
7 0

The correct answer is: A supplemental heating unit for cloudy days, winters, and nighttime.

DochEvi [55]3 years ago
4 0

Answer:

A supplemental heating unit for cloudy days, winters, and night times

Explanation:

Solar energy is the energy obtained from Sun and is the renewable eco-friendly source of energy. It relies on availability of Sun in sky so as to use it for energy production. Since solar energy is not available at night time, there is a need of supplemental heating unit. Similarly, amount of solar energy fluctuates during cloudy days and winters which in turn poses the need for supplemental heating unit.

You might be interested in
Briana is studying a model of the light-dependent reactions of photosynthesis. The diagram shows a part of this model.
weqwewe [10]
<h2>Answer:</h2>

The correct answer to the Briana question is <em>option A which is a wavy arrow that shows Photo system I.</em>

<h3>Explanation:</h3>
  • Photosytem II is light depending system, which absorbs light energy and generates electrons and hydrogen and oxygen ions from the break down of water molecules.
  • While these electrons are the input for photosystem I which is light independent system.
  • NADP+ receive electron and hydrogen ions at the end of photosystem I, not at the end of photosystem II.




6 0
3 years ago
Anyone know this? Not sure if my answer is right
emmasim [6.3K]
Your answer is right
7 0
3 years ago
Read 2 more answers
How does a sand dunes change earths surface
TEA [102]

Answer:

They act as barriers whereby wind deposits its load to  come up with major land forms in the desert.

Explanation:

Sand dunes retain  the load  that arises as a result of  erosion processes ,and disposition.

Wind deposits con form hills and sand sheets .

An example of this is in California , whereby Sand dunes make up to 25 %  of the land-forms in the arid areas .

Sand dunes can also influence the formation of oases , as a result of wind action.

6 0
3 years ago
The Hubble Constant: measures distance using parallax angles measures the difference between absolute and apparent magnitude is
Sophie [7]
<h3><u>Answer;</u></h3>

is a relationship between distance and velocity

<h3><u>Explanation;</u></h3>
  • According to Hubble's Law the recessional speed of a galaxy is directly proportional to its distance.
  • <em><u>The Hubble Constant is the unit of measurement used to describe the expansion of the universe, it is the relationship of the recessional speed of a galaxy and its distance.</u></em>
  • The formula showing the relationship is given by the formula:

      v = Hd, where: v = velocity of a galaxy, in km/s. H = Hubble Constant, measured in km/s/Mpc and d is the distance in km.

3 0
3 years ago
Assume that instead of Taq polymerase, another polymerase, one that is very heat-sensitive, was used in a PCR. What differences
BigorU [14]

Answer:

The heat sensitive polymerase would be denatured resulting in formation of little or no PCR products.

Explanation:

PCR is a technique that forms multiple copies of a small DNA sample. For the purpose, the DNA sample is exposed to very high-temperature conditions (around 95 degrees C) to facilitate the denaturation of DNA helix. These high-temperature conditions denature enzymes such as heat-sensitive DNA polymerases. Therefore, no or very little DNA molecules will be formed by the end of the process as the denatured DNA polymerase would not be able to extend the primers.

To avoid these conditions, heat-tolerant Taq polymerase is used in PCR which can withstand the extremely high-temperature conditions of PCR.

5 0
4 years ago
Other questions:
  • As you walk into a brightly lit room, the black structure in the center of your eye seems to shrink to a tiny black dot. this re
    14·1 answer
  • What is the general term for any carbohydrate monomer? glucose/ polysaccharide / monosaccharide / fructose
    14·2 answers
  • Which side of a leaf transpires the most?
    10·1 answer
  • Walter conducts an experiment with pea plants. He crosses two hybrids (Yy). If the cross produces 100 offspring, how many will b
    9·1 answer
  • Movement from low concentration to high concentration will require:<br> nothing or<br> energy/ATP
    8·2 answers
  • Long-term potentiation enhances the release of which neurotransmitter into the synaptic cleft, resulting in enhanced learning?
    10·1 answer
  • What are the five general functions of epithelial tissue?
    6·1 answer
  • A DNA nucleotide is composed of
    6·2 answers
  • 6. A cell recognizes that it has a damaged
    10·2 answers
  • Explain how water enters the roots of the trees from the soil
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!