Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
There are both physical and biological limiting factors found in nature.
-Physical factors (abiotic factors) include temperature, water availability, oxygen, salinity, light, food and nutrients.
-Biological factors (biotic factors) involve interactions between organisms such as predation, competition, parasitism and
herbivory.
A magnifying glass is an example of a simple microscope. The correct answer is will be D, simple microscope.
an agent, such as radiation or a chemical substance, which causes genetic mutation.
