mechanical weathering
Mechanical weathering is the process of breaking big rocks into little ones. This process usually happens near the surface of the planet. Temperature also affects the land. The cool nights and hot days always cause things to expand and contract. That movement can cause rocks to crack and break apart.Mechanical weathering involves mechanical processes that break up a rock: for example, ice freezing and expanding in cracks in the rock.
Answer:
The Cosmologist have to purchase use telescope so they can see the outside world.
Answer: Retinalogical
Explanation:
Vitamin A is a fat soluble vitamin that can be stored in the body.It belongs to the group of unsaturated organic compound which has nutritional qualities in them. Vitamin A includes retinol, retinal and retinoic acid and few provitamin A.
It has multiple functions in the body. It is very essential for eyes. It acts as the growth factor for the epithelial cells and other cells in the body.
It is also required for a good immune system inside the body.
Hence, retina logical is not an active form of Vitamin A.
Answer:
Scientific investigations produce evidence that helps answer questions and solve problems. If the evidence cannot provide answers or solutions, it may still be useful. It may lead to new questions or problems for investigation. As more knowledge is discovered, science advances.