Answer:
The definition of a pure line is a result of inbreeding where animals or plants have certain characteristics that are the same through generations. An example of a pure line is the result of inbreeding of a certain flower to help it fight off diseases.
Answer:
Limestones and coal are the types of rocks which are the example of organic type of sedimentary rocks.
Explanation:
These rocks are made from organic compounds that are dead remains of plants and animals. These are also known as fossil fuels. These takes a lot of time to be formed by the pressure of Earth. These rocks do not have much calorific value if they are burnt. Limestone can be used for many purposes like in buildings or any other infrastructure.
Coals are classified as non-renewable source of energy. Non-renewable source of energy is used once and take millions of years to be formed again. This fuels also cause air pollution which is harmful for humans and plants.
