<h2>Theory</h2>
Explanation:
c. a set of closely related ideas that explain an observation
Theory can be defined as a set of ideas that are linked to each other and explains a particular observation. Theories can be scientifically analysed.
They can be a speculation, a proven fact or an educated guess on something that cannot be seen.
Theories are often analysed to support or reject a pre-existing theory or hypothesis.
It should be equal
nothing is lost, nothing is created
The answer for the above question is D. Bioremedation;
Aquifer is a body of rock or sediment that can hold and release water at an economic cost. Permeability and porosity are generally high, mainly two types, that is confined and unconfined. Confined aquifer is an aquifer bounded above and below aquicludes or aquitards. It is not open to the atmosphere and does not have a fluctuating water table. Unconfined aquifer on the other hand is open to the atmosphere and has water table that flactuates with rainfall.
The re-radiated light from the earth's surface has a higher wavelength (and lower frequency) compared to the light hitting the earth’s surface from the sun. This is because the re-radiated light is usually in the infrared spectrum (which has lower energy) while that striking the earth is majorly visible and UV light (which has higher energy in comparison).
This is true. Mammals seem to have been thriving in the different environments around Earth. One good reason why this has happened has been because they are very well adapted to the challenges which their environment poses to them. With that said, this also means they are very good at gathering food for themselves which enables their survival.
