Question 19 What is an advantage of a nuclear-fission reactor?
А
The nuclear waste generated has a very long half-life.
B
The products of fission reactions are often radioactive isotopes.
С
The power plants are only expensive if they require radiation shielding.
D
A large amount of energy can be produced from a small amount of uranium.

Which of the following is not a defining characteristic of plants?

Where is the nictitating membrane found? a. between the eyelid and the eyeball b. between the retina and the optic nerve c. between the outer and middle ear d. in the organ of corti in the middle ear

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.