Nothing remains the same and habitats are constantly changing. There are two main types of succession, primary and secondary.
Answer:this is definitely a covalent bond
:)
For many common cancers, such as breast cancer, bowel cancer and prostate cancer, radiation therapy is highly effective in reducing the risk of cancer recurrence after surgery or helping the surgery be more successful.
D, light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.
Gas is the correct answer
