Answer:
The answer is D.
Explanation:
Sewers are connected to households and usually roads. When rain comes down, it goes down the drain in the road which leads to the sewers. The same thing happens with the answer C. A, household waste water, is connected to the sewers as well. So, since all three of these are correct, you would choose D.
Hope this helps.
Different forms of genes are known as alleles.
Answer:
It can cause diarrhea. It can cause severe abdominal pain and vomiting.
Explanation:
You could be exposed into raw vegetables and undercooked beef.
Answer:
a mushroom is a heterotroph
the main difference between fungi and plants: Fungi=heterotroph, plants=autotroph
Explanation:
Answer: Leeuwenhoek biggest contribution is to the first tenet of the cell theory.
Explanation: the first tenet of cell theory states that every living being is made of cells and even an organism can be made of just one cell able to reproduce by itself.
Leeuwenhoek observations stablish the existence of microscopic structures alive some with movement. This helped other scientists to determinate this structures were cells that can make vital processes such as feeding, breathing or reproducing which are determinant in biological definition of life.
