Which statements are true of white blood cells? Check all that apply A. They are called leukocytes
B. They carry carbon dioxide
C. They contain hemoglobin
D. They protect against infection

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

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?

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12