Neither, humans don't have an estrous cycle, instead the females have a menstrual cycle.
Answer:
A. Floods will wipe out all the vegetation
Explanation:
Drought is an environmental condition characterized by scarcity of water. Less rainfall and reduced ground water levels facilitate drought like conditions. In the event of drought, animals face difficulty in finding food and water and thus are forced to migrate to other areas. However, flood is exact opposite to drought. It is caused by excess rainfall or increase in water level which destroys the ecosystem. It is not a characteristic of drought.
A controlled experiment is the type of experiment when <span>two experiments are identical except for one variable. So the word missing is Controlled experiment. Hope this helps</span>
Answer:
By the use of uncontaminated water
Explanation:
Blood flukes are flatworms that are parasitic in nature. These are also called schistosomes.
If we consider the mode of transmission of the parasites to humans, we find that their transmission occurs in the following conditions -
- These parasites enter the human body when a person is swimming in contaminated water.
- They can also infect the human body if the person drinks contaminated water or eats food that have been washed with the contaminated water.
Thus it becomes clear that contaminated water is the main source of infection of blood flukes so using uncontaminated water and avoiding to be in contact with contaminated water will reduce the incidence of blood flukes in human population.
