A) The data to support his hypothesis, so he should investigate if the same change happens in the density of solid water.
Answer:A concave mirror is a spherical mirror with the surface of reflection is curved in an inward direction while a convex mirror is a spherical mirror with a reflecting surface with an outward bulge.
Explanation:
Hope this helps :D
The process is called photosynthesis and it takes place in the chloroplast of a plant cell
1. plants do not need and complex excretory organ because it creates a very small amount or nitrogenous waste.
