During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.
Answer:
Paramecium.
Explanation:
Ciliates are group of protozoans organisms that are characterized by special organelles called cilia.
Cilia is used for loccomotion in ciliates and can also be use to move food into the body. The cilia can be use for swimming, crawling, for attachment and sensation. Some ciliates are free living while some are parasitic. They are found in the aquatic habitats both fresh water and ocean.
Answer: gas in the air, pollution
Explanation:
Around Autumn as the temp and pH of soils are vlose the the optimum
Answer:
Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium. These and other processes in stars have lead to the formation of all the other elements.
HYDROGEN
Explanation:
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