Which of the following supports the idea that aquaponics reduce the impact of human activities on the environment?
1.the installation and maintenance of equipment requires an investment of money.
2.only certain types of fish can be used in aquaponics
3.aquaponics systems use a great deal of water.
4.reuse of fish waste reduces the use of fertilizers.

Sammi is studying the interaction of the digestive and circulatory systems in the human body. she has listed various processes that occur in each of the systems. put the processes in order to describe the interaction between these two systems. tiles nutrients diffuse through the villi of the small intestine.digestive processes break nutrients down in the mouth, stomach, and small intestine.blood is pumped through the circulatory system to deliver nutrients to other organs.nutrients are ingested at the mouth.nutrients enter the capillaries of the circulatory system. sequence

Contrast how pollination is different among gymnosperms and angiosperms.

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound