Answer: Option C
Explanation:
A biological species can be defined as the concept which includes the group of individual which lives in one or more population that can reproduce among each other to produce viable species.
Speciation is the phenomenon by which one group of species gets separated from another. The species gets diverge due to reproductive isolation or due to geographical isolation.
Hence, the correct answer is option C
A sound wave is A wave of compression and rarefraction .
Answer:
1. Iron (ferrous)
2. Zinc
Explanation:
Iron is a major component of hemoglobin which is responsible for the transportation of oxygen from lungs to all cells of the body, while excess iron has also negative effects on our body such as it causes liver disease (cirrhosis, cancer), heart attack, diabetes and sometimes it causes death. Zinc also plays a vital role in our body because it is a main component of all cells and also provide protection against microbes. It also needed for the production of DNA and protein. Zinc in excess amount causes copper deficiency, Nausea Stomach Pain and Diarrhea.
The correct option is: DOING HOME ENERGY AUDITS.
One can reduce the uses of fossils fuel by conserving energy, recycling products, re-using materials and by living green. Almost 85% of US energy comes from fossil fuel. The use of fossils fuel has greatly increased and there is a critical need for the nation to reduce the consumption of fossils fuel and to find alternative means of energy.
