Alveoli are found in lungs and exchamge O2 and Co2 !!
so answer is last one !!
The purpose of ethical guidelines for handling of experimental subjects is to ensure the safety and well-being of all living creatures in an experiment.
Ethical guidelines include issues such as human rights, animal welfare, safety compliance with the law, conflicts of interest, health standards..
Ethical guidelines are the norms for the acceptable and unacceptable behaviors of the researchers.
Answer:
The necessary structure for asexual reproduction
Explanation:
D is correct. Cool air sinks, which forces warm air to rise.
Convection is when warm material rises and cool material sinks
Hope it helps
I had trouble with this one, I was on a quiz I had.
Norman Borlaug developed a drought and disease resistant dwarf wheat which helped the people of Mexico and India during food shortages.
