A cast fossil is formed when

an imprint is left in mud

an organism is petrified

an organism is buried and part of the organic material is left behind

minerals fill in an impression left by an organism

How does sexual reproduction contrubute to the quantity of genetic diverity among individial?

Of the answer choices, what is the most likely reason that paracrine signaling does not activate the cell that is producing the signaling molecule? The cell's receptors have a mutation. The neighboring cells are too far away.

Describes a life cycle in which the haploid stage is the dominant stage

Gregor Mendel known as the father of genetics observes traits and he plants that resulted from factors from each parent these factors are what we call?

In order for transcription to happen, DNA must

In a solution, salt is considered the ...

Who concluded that in dna adenine levels were equal to thymine levels and cytosine were equal to guanine levels

Which are the main causes of crack growth in rocks over time?

There is a process that results in the feature ocean trench, what is the name of this process? Explain the process in detail. Be specific.

The rock cycle is not used to illustrate