Answer:
The process that is an important part of chemical weathering through oxidation is oxygen giving up electrons to other elements
I think the answer is B:the cell must remove waste
Explain: it’s definitely not option 1, it’s an animal cell. The last one I doubt as well. So it is down to B and C.
Answer: biotic and abiotic factors are the environmental conditions that the organisms have to face to live in a specific environment
Explanation:
Cellulose <span>is a chemical compound that forms tangled fibers in the cell walls of plants. Cellulose is a chemical compound made out of sugar and if found in the cell walls of plants.</span>
Answer:
Option D, Personal habits, such as hand washing, have greatly reduced contamination from bacteria.
Explanation:
Diseases like typhoid and cholera became pandemic a century ago because people at that time were not aware of the general hygiene and its impact on killing microbes.
Majority of human diseases are caused by either bacteria or virus only when they ingest into the internal body system. The entry of microbes can be restricted by adopting healthy hygiene habits such as washing hands regularly with disinfectants, washing vegetable properly before cooking etc.
Such habits break the chain of contamination and hence prevent the disease from spreading.
Thus, option D is correct
