Answer: Contour ploughing
Explanation: The soil conservation can be defined as the techniques that are opted to conserve soil. It is necessary for the soil to be conserved as it is necessary for the growth of plants.
There are various methods that can be used to conserve soil. Contour ploughing is one of them. In this method furrows are made that move left to right to maintain a constant altitude.
This technique reduces the runoff which helps in the soil conservation.
Answer:
Some substances are made of only one kind of atom. Other substances are made of more than one kind of atom. How are the properties of these two types of substances different?
The properties of both atom differs as a result of presence of different constituents in their atom, the electron of an element made up of one atom would be different from another made up of two atom.
Explanation:
Answer: Correct options are A, C and D
A. a forest because it has more trees to provide plant litter
C. a forest because it has more animals to mix the soil
D. a forest because the trees prevent rain from reaching the soil
Explanation:
Humus simply refers to organic matter, and the quantity of organic matter in a habitat depends on the extent of life activities done there.
Deserts, unlike forests have minimal life activities (as few plants and animals thrive in it). Thus, forests have more humus than deserts.
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
