Carl dropped an irregularly shaped rock with a mass of 309
into a graduated cylinder. The
graduated cylinder had 10 mL
of water in it and rose to 15 ml
once the rock was added.
What is the density of the rock?
PLEASE HELP

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

What controls activities within a eukaryotic cell?

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.