Cover crops suppress weeds and reduce damage by diseases, insects and nematodes. Many cover crops effectively suppress weeds as: a smother crop that outcompetes weeds for water and nutrients. Residue or growing leaf canopy that blocks light, alters the frequency of light waves and changes soil surface temperature.
Natural selection got rid of the light colored moths and helped the darker moths survive and become more abundant.
It can damage crops and trees in a variety of ways
Answer:
D - vasodilation
Vasodilation is the widening of the blood vessels, it results from relaxation of smooth muscle cell within the vessel walls. It's not an example of negative feedback mechanism
Explanation:
What is homeostasis
It's a tendency of an organism or a cell to regulate it's internal environment and also maintain equilibrium using a system of feedback controls.
There are two types of feedback mechanism
We have both positive and negative feedback mechanism
The negative feedback mechanisms in living things regulate critical body processes.
Examples are : body sweating, body shivering, regulstion in sugar level.
