Answer:
Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems. Biotic describes a living component of an ecosystem; for example organisms, such as plants and animals. Examples Water, light, wind, soil, humidity, minerals, gases.
Explanation:
A change in the color of a substance -- this one is indeed a chemical change. Think of iron, if iron turns reddish, it's a completely different substance.
There are 23 chromosomes in each gamete but that includes the two sex chromosomes so you could say each human gamete has 21 autosomes.
The answer for the first one is the first row
TT, to, GG, gg
This is called mutualism. hope this helpes
