2. Which take deoxygenated blood back
to the heart?
O veins
O arteries
O capillaries

Modern whales developed their traits through natural selection what occurs during the process of natural selection

How can you tell the difference between rough er from smooth er?

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?