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aliya0001 [1]
3 years ago
13

The Sun is the primary source of energy for ecosystems. The Sun emits______ . When an organism obtains nutrients by feeding on o

ther organisms in the ecosystem, energy is used and released. Energy changes form, but it isn’t destroyed as it transforms. This scientific law is called the law of_________ .
Biology
2 answers:
Liono4ka [1.6K]3 years ago
7 0
The sun emits solar energy, the law is known as the law of conservation of energy
Burka [1]3 years ago
4 0

This scientific law is called as Law of conservation of energy.

Sun is the primary source of energy .Energy once produced by the sun is then utilized by the organisms at various tropic levels. The energy is transferred from one organism to another. Energy is neither created nor destroyed. This is called as law of conservation of energy. Plants uses sunlight and make food   and the energy is then transferred to organisms eating it. When the organism dies the energy is released into the environment. This cycle continues and the the law of conservation of energy is maintained.

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Which best describes the process the respiratory system goes through to provide oxygen to the body?
ArbitrLikvidat [17]

Answer:

The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.

Explanation:The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.

7 0
2 years ago
You and your roommate do a genetic analysis and learn that you share the same maternal ancestor 15,000 years ago in Europe. Whic
Vesnalui [34]

Answer:

Mitochondrial DNA.

Explanation:

Mitochondria is known as the power house of the cell and one of the important organelle responsible for the production of energy. Mitochondria contains its own DNA.

To understand the maternal ancestor history, the mitochondria DNA  must be studied. The mitochondria is solely obtained from the mother as the egg contains large amount of cytoplasm that contains mitochondria. The mitochondria can never be inherited from paternal origin as the sperm contains few amount of cytoplasm and mitochondria.

Thus, the answer is mitochondrial DNA.

4 0
3 years ago
Decomposers are necessary in an ecosystem because they
nekit [7.7K]
They return nutrients from waste or dead organisms back into the ecosystem to be recycled.
7 0
3 years ago
What is the European Union’s most important water pollution act called
yawa3891 [41]

Answer: The European Union's most important water pollution act is called Water Framework Directive.

The demand for clean lakes and rivers, coastal beaches and groundwater by the environmental organizations and the citizens the commission made water conservation a chief priority under which the Water Framework Directive was made. The Water Framework Directive has some of key objectives like expansion of the scope of water protection for all types of water sources, water managements on the basins of rivers, ensuring proper quality standards, involvement of citizens and correct pricing etc.

3 0
3 years ago
Read 2 more answers
Water’s properties of surface tension, cohesion, and adhesion are central to the ability of transpiration to pull water up from
Daniel [21]

Answer:

6.) larger diameter of stomatal pores

A) Increased transpiration pull

1.) thicker film of water on surface of mesophyll cells

2.) higher relative humidity in air around leaf

B) decreases transpiration pull

3.) less curvature of water surface on mesophyll cell walls

4.) lower rate of water evaporation from surface of mesophyll cells.

5.) larger air space in leaf interior

C) has no effect on transpirational pull.

Explanation:

  • Transpiration primarily occurs through stomatal openings in the leaves. Increasing the diameter or size of these opening would ultimately increase the amount of water escaping from them and therefore, increase the transpiration rate.
  • Higher humidity in the air entails the presence of greater number of water vapours in the atmosphere. Since osmotic pressure plays a major role in transpiration, therefore, this decreases the rate of transpiration.

8 0
3 years ago
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