Answer:
A
Explanation:
states that each rock layer is older than the one above it. So, the relative age of the rock or fossil in the rock or fossil in the rock is older if it is farther down in the rock layers.
This process is called Cloning. Cloning is the process of producing genetically identical copy of an organism or a cell, which may occur naturally or created in the lab. Naturally it may occur through processes such as asexual reproduction in organisms such as bacteria; where offsprings that are genetically identical to the parent are created. In the above case, it is done artificially to generate identical plants using growth hormones.
Answer:
A) all the genes that occur in the population.
Explanation:
The gene pool is defined as the set of all genes in population. The larger the genetic pool in population is, the grater genetic diversity is so the population can survive intense process of selection. On the other hand, low genetic diversity can cause reduced biological fitness and the chance of extinction is increased.
Arson is where a person purposely sets something on fire. Statistics are hard to find, because they are mostly kept in police records.
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.
