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masha68 [24]
2 years ago
6

PLEASE HELP ASAP WILL MARK BRAINLIST‼️‼️

Biology
1 answer:
Mashutka [201]2 years ago
4 0

Answer:did you ever get he answer I need help

Explanation:

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explain why the top of an energy pyramid does not have an arrow showing energy going back down to the bottom.
SCORPION-xisa [38]
<span>The answer to your question is that all of the energy is ultimately radiated into empty outer space as heat. The second law of thermodynamics mandates that all processes that involve the transfer of energy MUST radiate a portion of this energy into space as waste heat. This is why when you run down the street you get hot and sweaty, and this is why automobiles MUST have a functioning radiator and nuclear power stations MUST have evaporation cooling towers or else be located near a large body of water to exchange excess waste heat into, etc., etc. It is also true that the transfer of energy at each step up the food chain is very inefficient. They say it takes around 50 lbs of corn to produce one pound of beef, and it probably takes 20-30 pounds of beef to produce one pound of human tissue. The rest of the energy just goes into your living room as radiated body heat. I hope this helps.</span>
4 0
3 years ago
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Unlike freshwater fish, saltwater fish
Olin [163]


The best answer is A

Saltwater fish are hypotonic to their surroundings. This means their blood has a higher water concentration than the surrounding sea water.

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3 years ago
What is the answer please someone answer fast I need it
gizmo_the_mogwai [7]
I believe the answer would be B I think sorry in advance if im incorrect 
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What must have been true of unicellular organisms evolved into organisms in the domain eukarya apex?
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Absorbing other cells gave a competitive advantage.
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6 0
3 years ago
1. Photosynthesis and cellular respiration are often described in two ways: (1) They are chemically opposite; and (2) They have
SVEN [57.7K]

Answer:

Photosynthesis and cellular respiration are chemically opposite. The reactants of photosynthesis are energy, carbon dioxide (6CO2), and water (6H2O). The products of cellular respiration are energy, carbon dioxide, and water. The products of photosynthesis are glucose (C6H12O6) and oxygen (6O2), and the reactants of cellular respiration are glucose (C6H12O6) and oxygen (6O2). So, the processes' equations are chemically opposite. The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Without photosynthesis, cellular respiration couldn't take place, and without cellular respiration, photosynthesis couldn't take place. It's like a cycle.

Explanation:

6 0
3 years ago
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