The kidneys filter nitrogenous from the blood.
A. O waste
B. amylase
C.
oxygen
D
nutrients

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt