Answer:Carbon dioxide accounts for most of the nation's emissions and most of the increase since 1990. Transportation is the largest source of greenhouse gas emissions in the United States, followed by electricity generation.
Explanation:
Answer: A, B, and C are correct.
Polar attractions are (a) forces between atoms of partial charges.(b) weaker than covalent bond.(c) they are numerous.
Explanation:
Polar attractions take place between atoms with partial charges. They are weaker than covalent bond and numerous of them occur in the living cells. They can form between H and other electronegative atoms like oxygen provided they have strong partial charges.
Answer:
According to Charles Darwin, natural selection is based on the survival of the fittest, or that the species adapts according to the environment in order to survive in that environment, what would have happened to the lizards is that in the laboratory they underwent a different adaptation to that of their habitat which were forced to change their anatomy, this is a problem if these lizards were thrown into their "natural environment" as they are adapted to the laboratory environment, ideally the lizards would develop in the field or space where they will develop and grow throughout their lives.
Explanation:
or where there are no discrepancies between their natural habitat and their artificial habitat (laboratory)
It is true that the water that came from your faucet could contain molecules that Neanderthals drank.
This is because there is the same amount of water today on Earth as there was when Earth was formed 4.6 billion years ago. That is to say that the water that Neanderthals used to drink millions of years ago when these early archaic humans inhabited our planet.
Answer:
Frog - The frog has three respiratory surfaces on its body that it uses to exchange gas with the surroundings: the skin, in the lungs and on the lining of the mouth. ... A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs.
Tadpole - Tadpoles open their mouths as they swim and take in water. As the mouth closes, muscles transfer the water to the gills. These consist of thin membranes called lamellae, which take oxygen from the water where it enters the blood stream through the process of diffusion.
