d. an opening specified for waste removal is present
Answer:
Option (B).
Explanation:
Evolution is the process of the change of the species characteristics with the passage of time. The species that can adapt better in the environment has high chance of survival.
Human evolution has explained well in the evolution and involves human development from the ancestral primates. The human evolution has occurred at the short time might occur due to some genetic changes or mutation. The evolution of the human chromosome 2 has occurred in relatively short period of time. This shows that human have specific objectively measurable properties.
Thus, the correct answer is option (B).
I would say the left atrium of the heart
Carbon cycle is process that shows the exchnge of carbon in the living and atmospheric system. Carbon cycle starts with the giving off of carbon dioxide from nimals, accumulation of co2 of plants, contribution of organic matter of dead animals and plants, photosynthesis, etc. The answer is D. fermentation
Exhaled air has a higher concentration of CO2 and the lungs are humidified within
