Helppp!! Identify the two body systems that bring oxygen into the body and transport it to your cells so you can perform cellular respiration to make energy (ATP).

The image shows embryos of three vertebrate classes

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

The bacteria inside a tube worm would be analogous to what organism in the ocean ecosystem near the waters surface? a. photosynthetic algae b. shrimp c. clown fish d. parasitic lamprey