<span>The factors that turned ferns into fossil fuels over thousand of years are pressure and heat.Ferns live in swamp forests, when they died and decayed they formed layers at the bottom of the swamp. Soil and water will built up and the heat and pressure would cause the decayed ferns to change over thousands of years, continuing to decay in the absence of oxygen will turn the fern into fossil fuels. <span>
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Yes it is from a plant biotic
Salt water is denser than cold water because fresh water sinks when it is in salt water.
Urine may also contain sulfate and phenol waste and excess sodium, potassium, and chloride ions. Thekidneys help maintain homeostasis by regulating the concentration and volume of body fluids. For example, the amount of H+ and HCO3 - secreted by the kidneys controls the body's pH.
Answer:
cross breeding
Explanation:
- the gene of the f2 with red eyes was transferred to some particular offspring and those with pink eyes also and vice versa .example,
- Py Py rY rY
Py (Py Py) (Py Py) (Py rY) (PyrY)
rY (PyrY) ( PyrY ) ( rYrY ) (rYrY )