Water perpetually cycle's from the earth to the atmosphere and back. In the previous sentence what does perpetually mean?

A. constantly

B. frequently

C. occasionally

D. rarely

How do retrotransposons differ from other transposons?

The burning of coal to make steam which turns a turbine to make electricity,

What enzyme complex is responsible for the replication of DNA?

The ability of the human body to break down the red color in beets is controlled by an autosomal dominant allele. The inability is recessive, detected by red coloration of the urine (we will call this phenotype 'secretor').

Difference between cytoplasm ans cell sap?

Explain why animal cells cannot capture energy from sunlight and use it to make food

how do i Predict the molecular formula of a three-carbon alkyne.

Is the fossil record complete for humans?

Why is the blinking response effective

Give one example for each type of communicable disease spread. direct person-to-person contact through animals by contaminated materials