Answer:
4) increasing populations of native fish that feed on mosquito larvae in the swamps
Explanation:
The complete question is :
Communities have attempted to control the size of mosquito populations to prevent the spread of certain diseases such as malaria and encephalitis. Which control method is most likely to cause the least ecological damage ?
1) draining the swamps where mosquitoes breed
2) spraying swamps with chemical pesticides to kill mosquitoes
3) spraying oil over swamps to suffocate mosquito larvae
4) increasing populations of native fish that feed on mosquito larvae in the swamps
- The method by which the pests or the insects' are controlled by introducing their natural enemy in the environment to reduce their number is termed as biological control.
- The natural enemy can either be a predator, a parasite, a herbivore or any other organism that leads to a reduction in the number of the target organism.
- The advantage of using this method is that it circumvents the need to use artificial chemicals that cause harm to the environment as well as the other living organisms.
- I<em>n the given options, increasing the populations of native fish are the predators of mosquito larvae is an example of biological control and hence is the best option. </em>
This would be considered the synaptic cleft
The right option is c. pancreatic
islets
The parts of the pancreas that
have endocrine functions are known as pancreatic islets. The islets cells
functions by producing and releasing important hormones directly into the
bloodstream. The two main pancreatic hormones produced by the islet cells are
insulin and glucagon, which acts to lower blood sugar, and to raise blood sugar
which is important to the functioning of key organs such as brain, liver, and
kidneys.
Answer:
The correct answer will be- What is the effect of adding nutrients over community of plants in a particular ecosystem?
Explanation:
The scientific method is the sequential steps performed to answer the scientific questions based on the observations on the basis of experiments.
The scientific question is the question which has the real answers and can be verified and supported by the experiments and observations.
In the given question the person observed that the composition and structure of the habitat changed due to the addition of nutrients. So he framed a scientific question " What is the effect of adding nutrients over the community of plants in a particular ecosystem?
B the answer to the question