Answer:
true
Explanation:
think of a box, if you push it on a smooth floor without friction it would glide pretty easy
but put it on say carpet, the friction from the carpet would not allow the box to move very far
that's also how brakes work, they apply friction to the wheels in order to get them to reduce motion
Answer:
Definition: the branch of science concerned with classification, especially of organisms; systematics.
Explanation:
it helps scienctist categorize organisms so they can more easily communicate biological information.
Answer:
2
Explanation: Oxygen has 8 electrons.In the first level it has 2 because its the maximum number of electrons that can be held in the first shell or level
Facilitated diffusion
<span>The word 'diffusion' means free movement across distance, with or without the presence of a barrier. However, there is a phenomenon known as facilitated diffusion which occurs at the cellular level. The cell does not allow free radicals and other harmful substances to enter and harm the cell organs. This is possible due to the structure of the cell membrane. The structure is such that, it allows only certain things to pass in and out of the cell. One such activity that allows selective movement in and out of the cell is the process of facilitated diffusion.</span>