One difference between mixtures and pure substances is that
a)
mixtures can be physically separated.
b)
mixtures are made of one type of atom.
c)
pure substances have no chemical bonds.
d)
pure substances can be physically separated.

Option (A) is the correct answer.

Explanation:

A mixture is defined as the substance that contains two or more different number of substances which are physically mixed together.

For example, a mixture of mud and water can be separated through the process of filtration.

A pure substance is defined as the substance which contains either same or different type of atoms that are chemically combined to each other in a fixed ratio by mass.

For example, both and are pure substances.

A pure substance can only be separated by chemical means.

Thus, we can conclude that one difference between mixtures and pure substances is that mixtures can be physically separated.

i think the answer is g1

hope i

-lavira: )

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.