Which of the following body systems do both roundworms and flatworms lack?

A. circulatory

B. digestive

C. nervous

D. none of the above

Classify the energy sources as renewable or nonrenewable. water nuclear coal natural gas biomass

Jon likes hiking. He observes that whenever he hikes up a hill, he breathes heavier than when he is on flat ground. Which two statements explain why this happens? Sensors in the brain detect a lack of oxygen.

What is the value of the expression? 4 to the second power plus 3 to the 3rd power

Which right is NOT mentioned in the U. S Constitution

Each year, the science club puts on a science show for the students in the elementary school. Luis is planning demonstrations to show properties of metals. For one property, he decides to use a ball of pizza dough and a rolling pin.

What is the role of the plasma cell in the antigen-antibody response? makes an antigen harmless without destroying it produces antibodies against the sensitizing antigen produces antibodies after an exposure to a known antigen clumps

Why do most plants have green leaves?

When a plant produces sugars and transports them during translocation, which main plant tissues are at work? dermal and meristem dermal and vascular ground and dermal vascular and ground

Which of the following is an example of an X-linked recessive disorder? A. Sickle cell disease B. Methemoglobinemia C. Color blindness D. Huntington disease

A woman diagnosed with breast cancer is to undergo a lumpectomy followed by radiation therapy. When reviewing the treatment plan with the client, the nurse determines that the woman has understood the information based on which client statement?