Answer: Positive
Explanation:Because of the gain in speed
The Answer is C Gas exchange take place in our lungs
Answer:
Those organisms are fit which has the ability to survive in harsh climatic condition and transfer their traits to the next generation through the process of reproduction.
Explanation: Fit means they are strong and compete with other organisms for food, shelter and other survival items. Those organisms which are not fit could not survive in harsh environmental conditions and removed from that ecosystem.
Fossil fuels and green house gases which burn holes in the ozone layer of the atmosphere causing global warming
Lichens are prominent on rocky shores.
