Nitrogen, oxygen and argon are the three most abundant elements in the atmosphere, but there are other key components that are required for supporting life as we know it on earth. One of those is carbon dioxide gas.
Answer: It can detect chemical cues produced by the predator Notonecta glauca.
Explanation:
I'd say Solar energy is a source we humans could use in the future
Answer:
Consistently changes the subject when the topic of the fetus/newborn is raised.
Explanation:
This is the decision of the couple whether they want a child or not and can discuss about the family planning as well. Different psychological aspects acn explain this matter.
The expectant father is not mentally prepared for the child. He might refuse the talks and stay away from the communication that are related to the new born child. This must be properly assessed and important to understand the feeling of the expectant father.
Thus, the answer is consistently changes the subject when the topic of the fetus/newborn is raised.