Question

please answer this its too urgent i will also mark you as brainliest ​

Answer 1

Explanation:

All living things need food. food gives them energy to work .humans and animals get their food from plants, smaller animals or dead animals.

Answer 2

Answer:

1) Inhaled air has about 22% oxygen and only 0.03% CO2, whereas exhaled air is mostly CO2 and water vapour with little to no oxygen.

2) Through respiration. The food is first broken down into its simplest form(glucose). Then, in the cells, organelles called mitochondria produce energy(ATP) from glucose and oxygen.