Which of the following sample types did scientists use to study climate over time a. fossils b. tree rings c. all the above d. ice cores e. soil cores

On a floor there are several 1-4 mm elongated drops leading away from a body lying in a pool of blood. the the forward wall there is a sigzag pattern and on the walls to the right side there is a linear patter

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis

We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources