Answer:
They interact by the upper mantle transferring energy by conduction to the core assisting in the softening of the rock layer which leads to radiation.
Explanation:
- Convection currents coming from the core and mantel are believed to the main cause of the interaction. As these currents travel up and down the curst and mantle boundary and this creates the plates to move freely forming a conveyor belt.
- The core of the earth creates this convective current to rise up due to the heat and pressure. The hot molten rocks in the mantle eventually cool and the cycle of rising and sinking takes place.
Answer: option C) All of the above
Explanation:
The solubility of fertilizers refers to
- the rate at which the fertilizers dissolve in soil water to ionize and release its constituent ions or molecules
- and the degree (quick or slow rate) to which these constituents ions/molecules are picked up by the root hairs into the plant vessels for absorption and usage.
Thus, all the options apply
<h3>Earthworms are extremely beneficial in agriculture. They aid in the following ways:</h3>
- They help loosen up and aerate the soil as they burrow deep. This aids in the respiration of the roots of the plants, making them penetrate deeper and grow well
- They are being used presently in vermiculture to produce high-quality manure
- They are also used as baits to catch fish
- They keep interchanging the topsoil with the layer just below, thereby increasing soil fertility.
- The excreta of earthworms is rich in the nitrogenous matter and is required for plant growth
HOPE IT HELPS
Answer:
A. The allele frequencies in a population have changed.