Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
Answer:
Option-II and III
Explanation:
The wastewater produced by humans like from the human toilets is dumped into the flowing river bodies mostly in rivers and in the lakes also.
The human wastewater is rich in the nutrient contents like the phosphorus, nitrogen, and potassium. These nutrients could be accumulated in the lakes which could cause eutrophication in the lakes and rivers.
Also, the human stool sump is rich in the disease-causing pathogens like the bacterial species present in the gut and intestine.
Thus, Option-II and III are correct.
Answer:
sophisticated irrigation, chemical fertilizers, chemical pesticides
Explanation:
The use of irrigation to provide needed water and the use of natural fertilizers to promote crop growth are farming methods that have been practiced for centuries. More sophisticated irrigation techniques, various chemical pesticides, and modern chemical fertilizers have been developed in the twentieth century.
Explanation:
the chlorophyll is responsible for photosynthesis because of the chloroplast that it contains wich stores the sunlight energy
<u>ANSWER:</u>
"Publish experiment results only if they agree with current theories or public opinion" is an example of society which expects to follow ethical practices and meet many ethical standards. .
<u>EXPLANATION:</u>
- It is important for researchers to ensure that they conduct experiments on the basis of true and desirable data so that the results of the experiment can be accurate.
- Research ethics also require that experiments be undertaken only under favorable conditions and not under all circumstances.
- Sometimes, it is required not to conduct experiments and therefore researchers must refrain from the same.
- It is also essential as per research ethics for researchers to analyse data correctly and investigate all events and not only events that impact the lives and livelihood of people.
- Researchers need to conduct their experiments without any bias.
