A substance that forms hydroxide ions in a water solution is a base

Base: a substance that produces hydroxide ions  when dissolved in water. Bases have a pH greater than 7. A base is any substance that dissolves in water and produces hydroxide ions, Hydrochloric acid  is a STRONG acid because it completely dissolves into H+ and Cl- ions in water.

Explanation:

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.