Hi can you please help me with this question

Explanation:

a) X = 2,8,1 Y= 2,8,7

b) NaCl

c) X= 1 Y = 1

d) X shoot around water

and it less dense than water so it float s on water

2)Carbon moves from the atmosphere to plants. ...

Carbon moves from plants to animals. ...

Carbon moves from plants and animals to soils. ...

Carbon moves from living things to the atmosphere. ...

Carbon moves from fossil fuels to the atmosphere when fuels are burned. ...

Carbon moves from the atmosphere to the oceans.

3)PVC is used to make pipes, polyvinyl flooring and siding, hoses, cable coatings, medical devices, and plumbing and automotive parts. It is used to make material for upholstery, housewares, shower curtains, raincoats, toys, school supplies, food packaging, and shoes.

the answer is a for sure mark brainliest i had got this right on usatestprep

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.