Within to the rock cycle, which of the following is NOT correct?
Metamorphic rocks may melt to become magma.
Sedimentary rocks may weather to become igneous rocks.
Heat and pressure may change igneous rocks into metamorphic rock.
Magma may crystallize to form igneous rocks.

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

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

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they