A one celled organism might have a cell wall instead of a cell membrane.
Answer:
Even small amounts of radiation over a prolonged period of time can be dangerous.
Explanation:
We all get exposed to radiation, such as through x-rays, and it's fine as one off experiences. However, if you're constantly dealing with radiation without any sort of protection, no matter how small the amount is, it could potentially lead to consequences like cancer. This is due to the fact that radiation can alter our genes
A metal rail rusting in damp weather.
Answer: It releases energy that is called the fusion
Explanation: The reaction, which it is known as a nuclear fusion that converts hydrogen atoms into helium.
Answer:
A net force acting on an object will change its motion. This means that a net force will change the kinetic energy of an object. The greater the force, the greater the change in motion and the kinetic energy of the object. Objects moving at a constant speed will have a constant kinetic energy.