That is an example of thermal energy which was passed on by conduction.
<u>Nucleic Acid, and Protein</u> are the class of biomolecule which are the two main ingredients in plant fertilizer.
Biomolecules- A chemical substance that is present in living things is called a biomolecule. These consist mostly of substances with the chemical elements carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus. The building blocks of life, biomolecules serve crucial roles in all living things.
Fertilizer- Any product or material given to soil to encourage plant development is referred to as fertilizer. There are many different types of fertilizers, and the majority of them include potassium, phosphorus, and nitrogen (N) (K). In actuality, the package of fertilizers bought in supermarkets lists the N-P-K ratio.
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Answer:
Option A
Explanation:
Options -
A-avoid water pollution.
B-build thermal power plants.
C-add water features to gardens.
D-avoid drip irrigation systems
Solution -
The largest source of freshwater on planet earth is underground water. The water beneath the surface of earth is very limited. The total fresh water reserve on earth is 3% of the total water on earth. Pollution due to discharge of waste water into the rivers and oceans has caused the degradation of not only surface water but also ground water.
Thus, option A is correct
Drip irrigation is a means to prevent wastage of water during irrigation. Thus, avoiding it will cause further loss of fresh water.
Addition of water feature will increase usage of water, thus it is also incorrect
Building thermal plant will also cause water pollution and wastage. Hence, option B is also incorrect
Answer:
One band of light density and one band of heavy density.
Explanation:
According to conservative model of replication, the original strands do not separate from each other during replication. Hence, after replication the old strands are together and the new strands are together.
Here, cells were grown in 14N medium first so 14N was used for DNA replication and all DNA molecules had 14N. When the cells were transferred to 15N medium, only 15N was available for replication process. New DNA molecules would be synthesised using 15N (15N15N) and old DNA molecules have 14N (14N14N). Hence, in density gradient one band will be of light density (14N14N) and one band will be of heavy density (15N15N).
