In a food chain which are ‘ the most efficient users of solar energy

Answers

Answer 1

Answer: The plants are the most efficient users because they use the most of it. After that about 90% of the energy gets used up whoever eats the next organism.

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Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light heats her hand. The light bounces off the pages of a book and into her eyes.If this room is a closed system, what happens to the total amount of energy in the room?

A.
It remains constant.

B.
It decreases.

C.
It increases, then decreases.

D.
It increases.

Answers

Well, we know that the total energy in a closed system remains constant.

The problem with the story of Eva is that she is not in a closed system.
If the dark room were really a closed system, then she could press the
button or turn the switch all day, and the lamp could not light. It needs
electrical energy coming in from somewhere in order to turn on.

Let's say that Eva used her arm muscles to strike a match and light the
candle on the table. Then we would have have food energy, muscle
energy, chemical energy in the match, chemical energy in the candle,
heat and light energy coming out of the candle, heat energy soaking into
her hand, light energy bouncing off of the book and into her eyes ... all
going on during the story, and the sum total of all of them would remain
constant.

Its a tricky one but my guess would be D if she turned on the lamp causing energy if would have increased the amount in the specificed room x

3.why does energy as heat move away from the tropics and toward the pole in the global weather system? 5. A student is reading about predicted upcoming El Niño event. In what way could the student expect to see the global weather patterns change?

Answers

There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
Convection is the transfer of heat through air and water.
Radiation is the transfer of heat regardless of the presence of atoms or particles.

Answer:

Well since this question was asked years ago, I do believe that there is more solar energy at the equater and less at the poles.

Explanation:

Which object absorbs the most colors of light? A.
an orange ceramic cup

B.
a gray stone

C.
a black roof

D.
a white T-shirt
can someone please help me

Answers

Black is not a color. Black is the absence of visible light, so it's the absence
of all color. Where you see black, it means no light is coming from there. If
it's an object, then any light there was that hit that place got completely absorbed.

A black color can absorb the most colors because black or other dark colors are more absorbent and white and light colors are more reflective.

So your answer is C. A black roof

What is the relationship between mutation, natural selection, and adaption

Answers

Mutation can cause an organism to instantly adapt while natural selection is when adaptations happen slowly, over time and generations.

What is the mass of a large dog that weighs 441 newtons

Answers

Weight, w = mg. g ≈ 9.8 m/s². m = mass in kg. w is weight in N

441 N = m* 9.8

9.8m = 441

m = 441/9.8

m = 45 kg.

Mass of the dog is = 45 kg

Which two of the following are the densest of the materials shown?Material Mass (g) Volume (L)
Rock 1000 0.5
Pillow 200 10
Bottle of soda 2000 2
Loaf of bread 100 1