Answer:
The circulatory system of a human compared to that of a frog is different due to the number of chambers. A frog’s heart has three chambers (two atria, and a single ventricle), whereas a human’s has four (two atria, and two ventricles). The atrium of a frog receives deoxygenated blood from the blood vessels that drain the various organs of the body. The left atrium receives oxygenated blood from the lungs and skin.
Answer: We have it inside of our bodies
Explanation: Biology
Pollution refers to the introduction into or the presence in the environment of a thing or a substance, which has poisonous or harmful influences.
The pollution is affecting our surrounding or environment in a drastic way. The pollution from cars, oil spills and littering can exhibit a major influence on the environment.
It can harm the crops, which affects the food we eat, the waterways, and the air we breathe in due to overriding of greenhouse gases. All this simultaneously also exhibit a certain amount of influence on the animals as well.
