When you are about to breathe in, the diaphragm and contraction of the intercostal muscles between the ribs creates more room for the lungs to expand.

Consider this plant cell which organelle is labeled g

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million