Answer:
(a) X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste.
Explanation:
<em>(a) X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste.
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<em>(b) X: Decomposers return carbon to the soil and release waste. Y: Producers undergo photosynthesis.
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<em>(c) X: Decomposers take in carbon dioxide. Y: Producers absorb carbon through their roots.
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<em>(d)X: Producers absorb carbon through their roots. Y: Decomposers take in carbon dioxide.
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<u>Box 2 (X) would be the process through which producers fix carbon dioxide to produce their own food, the carbohydrate. T</u>he process is otherwise known as photosynthesis and can be represented by the following equation:

<u>Box 4 (Y) would be the process of decomposition.</u> Both producers and consumers eventually die and decompose in the soil. During this process, some of the carbon returns to the soil as organic matters while the process of microbial decomposition releases carbon dioxide into the atmosphere.
The correct option would be (a).
Answer:
Bicuspid aortic valve is a type of abnormality in the aortic valve in the heart. In bicuspid aortic valve, the valve has only two small parts, called leaflets, instead of the normal three. This condition is present from birth. It can occur with other heart defects. The heart's ventricles are the two lower chambers of the heart.
location :
Bicuspid valve is one of the four valves of the heart which is situated between the left atrium and the left ventricle. Tricuspid valve is one of the four valves of the heart which is situated between the right atrium and the right ventricle. Bicuspid valve is present in between the left atrium and the left ventricle.
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Creeping thistle continuously survives through easy germination of seeds. The Creeping thistle seed can be buried in undisturbed soil for over 20 years and still become growable. And also, the roots help in their growth. They absorb nutrients and regenerate to form new plants. Although the roots may be able to penetrate some meters down, most regeneration occurs within or just below the plow layer. Portions of the adjacent roots become thick due to the developing storage tissue which is where new shoots are formed.
Mountain lions with lots of variation because variation is important for species’ survival. If there is an environmental change that negatively affects organisms with a certain trait, variation can insure that the entire species will not be wiped out because some organisms within that species might not have that trait and can survive.
Answer:
The Last Universal Common Ancestor (LUCA) is the most recent common ancestor of all current life on Earth, estimated to have lived some 3.5 to 3.8 billion years ago
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Explanation: