What is true of matter in ecosystems?A.The primary productivity of an ecosystem does not depend on the availability of nutrients.
B.Living things can recycle elements within an ecosystem as long as decomposers are present.
C.Matter flows in a one-way direction with a 10% loss at each move up in trophic level.
D.Elements continuously cycle between the physical environment and living organisms.

Answers

Answer 1
Answer:

Correct answer choice is:

D) Elements continuously cycle between the physical environment and living organisms.


Explanation:


Any nonliving matter that living things want is termed a nutrient. Carbon and nitrogen are parts of nutrients. Unlike energy, the object is converted into ecosystems. Decomposers deliver nutrients when they cut down dead organisms. When one organism eats a different organism, it takes all of its nutrients. Nutrients can also cycle out of an ecosystem. Falling leaves may be moved out of an ecosystem by a water. Decomposers cut down dead organisms into nutrients and carbon dioxide, which they respire into the air.

Answer 2
Answer: it is B i am 80% sure it is 

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What is a string of nucleotides called?

What elements are humans mostly made of

Answers

almost 99% of a humans mass is made up of 6 elements oxygen, hydrogen, carbon, nitrogen, calcium, and phosphorus.

Grass and fruit trees are not living organisms. true or false

Answers

This statement is false. 
Grass and Fruit Tree are all living organisms. When you say living organism, it contains life. Grass and trees do grow and needs nutrients the same as human, they also contribute to the environment to give life.

Why is the nucleus called the control center of the cell

Answers

The nucleus is called the control center of the cell because it directs all of the cell's functions.

Hope this helps :)
the nucleus is called the control centre because it contains the dna for the cell which is what instructs the cell on how to do everything

Can some organisms survive without energy from the sun?

Answers

Yes. There are organisms that live in areas where energy from the sun can not reach. Some of them use geothermal energy.

Final answer:

Yes, several organisms like certain deep-sea creatures and fungi can survive without energy from the sun. They derive their energy from chemical reactions or by absorbing nutrients from surroundings.

Explanation:

Yes, there are several organisms that can survive without relying on the energy from the sun. These organisms are often found in extreme environments where sunlight is minimal or absent such as deep ocean trenches. These organisms derive their energy from sources other than sunlight - most commonly via chemosynthesis. For instance, deep-sea hydrothermal vent ecosystems harbor a variety of organisms that survive without sunlight. Instead, they rely on chemicals present in the vent fluids as their energy source.

Another example is fungi, which absorbs nutrients from other organisms and doesn't depend on the sun for energy. Also, there are certain types of bacteria like the ones found in our gut that can survive without energy from the sun.

Learn more about Sunlit vs Sunless Organisms here:

brainly.com/question/34047420

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You're flying in a plane and the seatbelt sign is turned off. You're in the _____

Answers

You're flying in a plane and the seatbelt sign is turned off,  You're in Stratosphere
This happen when you usually entered 16km in height. Up to this point, it would be safe to use wireless communication device.

hope this helps

Stratosphere is the right answer.

As light is seen in the stratosphere, so as the cloud formation is rare in this zone. Though this zone also has complicated wind regularities, drastic storms don't befall there. Due, to this reason why the airline pilots prefer to operate in the stratosphere. The turning on or off the seat-belt depends on the pilot. If a pilot thinks that requirements are, or are expected to be, such that tourist move professes a threat, the combined seat belt symbol is illuminated. Precisely when those requirements are present is up to the pilots' responsibility.

If you cry a lot, would you eventually go blind?

Answers

Answer:

No, you would not go blind, even though the composition of emotional tears are different.

Answer:

Simply no, But when humans cry in response to stress, their tears contain a number of stress hormones and other chemicals. Researchers believe that crying could reduce the levels of these chemicals in the body, which could, in turn, reduce stress.