Use the drop-down menus to complete each statement about the amphibian heart. The
chamber is the pump portion of the heart.

The
chamber receives oxygen-rich blood from the lungs and skin.

The
chamber receives carbon-dioxide-rich blood from the rest of the body.

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

Need will mark ! which features are created by groundwater erosion and deposition? check all that apply. a. stalagmitesb. sinkholesc. rillsd. stalactites e. gullies f. rivers

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them