Answer:
Photon radiation
A high-energy photon beam is by far the most common form of radiation used for cancer treatment. It is the same type of radiation that is used in x-ray machines, and comes from a radioactive source such as cobalt, cesium, or a machine called a linear accelerator (linac, for short).
The speed of radioactive particles is also an important factor in medical use. Beta particles travel very fast. This, combined with their small size, gives them significant penetrating power. In cancer treatment, for example, beams of beta particles can be created outside the patient's body and directed at tumors.
Your answer is B Plant cells have cell walls instead of cell membranes because plants have cell walls to support, protect, and carry water through out the cell animals cells don't have that. Its also not A because they both have vacuoles its not C because they both have choralpast.
Your answer is B.
BTW if not B its all of the above.
Answer:
Charles Darwin and Alfred Russel Wallace
Answer: It is important that we use our natural resources so that we use any bad things for our earth
Explanation: