20 points :) How does the flame cell function in a planarian?
Select one:
a. Carbon dioxide is excreted by them through the mouth.
b. Cilia sweep water into excretory tubules.
c. Cilia sweep water out of the body.
d. Dissolved oxygen and nutrients are swept into the body by diffusion.

Which element provides strength to the exoskeleton of clams and oysters

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

10111213141516lactic acid fermentation differs from ethyl alcohol fermentation in thato in ethyl alcohol fermentation co2 is also producedlactic acid fermentation can occur in all living thingsethyl alcohol fermentation can only occur in plantsonly lactic acid fermentation can produce more atp