Write chemically balanced equation for the following reactions

(a) Zinc reacts with hydrochloric caids

(b) Magnesium reacts nitric acid

(c) Calcium oxide reacts sulfuric acid

(d) Barium carbonate and nitric acid

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.