IO Which is a characteristic of
compounds?
A. Compounds are only pure
substances.
B. Compounds are the smallest
form of a particle.
C. Compounds are made of at
least two types of matter.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2