Which of these organisms skeleton also acts as a skin

A. Flower

B. Elephant

C. Tree

D. Crab

Nitrate pollution in groundwater is most dangerous to older adults wildlife infants children age 12 to 18

Which sequence is listed in order from simplest to most complex

Which of the following best describes an example of a nonspecific internal response to harmful bacteria?. A) Skin serves as a physical barrier that prevents bacteria from entering the body ...

Compared to an ecosystem with just a single stage of succession, an ecosystem with a variety of successional stages a. has greater biodiversity. b. has a much lower rate of primary productivity. c. is more likely to experience forest fires. d.

What is the product P?

Trace the path of filtrate and urine from the glomerulus to the external urethral opening

What is the endocrine portion of the pancreas called?

In which order will seismic waves from an earthquake arrive

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? A. nitrogen + hydrogen peroxide → hydrazine + water B. nitrogen + water → hydrazine + hydrogen peroxide C.

Both frogs and ducks have webbed feet. However ducks are more closely related to perching birds than to frogs. Explain the process that has resulted in both frogs and ducks having feet that are similar