Answer: "mutations" .
_______________________________________
This is because iron is used to make a protein called hemoglobin. This protein helps blood cells carry oxygen around the body.
The type of soil that has the least amount of space between the particles is clay.
Explanation:
Biological hazards include microorganisms such as bacteria, viruses, yeasts, molds and parasites. Some of these are pathogens or may produce toxins. A pathogenic microorganism causes disease and can vary in the degree of severity
Answer:
trophic level
Explanation:
Each step of the food chain in the energy pyramid is called a trophic level.