The answer is B. alcohol crosses the barrier that the placenta creates
The placenta usually consist of several layers of cells that act as a barrier for the diffusion of substance that connect the maternal and fetal circulatory system that very important for the fetus' growth. But sadly, it can't block Chemical really well and alcohol can screw it u
They eat rodents and are eaten by owls and hawks
They are important because without them, the rodent population could become too numerous. Rodents like to chew on tree roots and other plants for nutrients, but this kills the plant. Too many rodents can cause a mass imbalance leading to the death of hundreds of other animals
Answer:
Usually, Populations have a genetic variation among individuals, which is important to the population's ability to survive in different situations that have an effect on the natural selection. There are different factors which can increase or decrease the genetic diversity, and influencing natural selection.
These factors include an environmental factor, one of the major factors, which may cause changes in the genetic variation of a population and influence the natural selection. A famous and important example of environmental factors affecting natural selection was during the Industrial Revolution, when many more grey moths made up the moth population.
This was so that they could blend in with the soot from factories to avoid predators.
The difference in air pressure which is created by the molecules in air help to move kite up into the air.
<u>Explanation:</u>
When air moves faster, pressure of air becomes less. Air moves at a faster speed above the kite than below it and so its pressure is less on top of kite. The air pressure below kite is less. This difference in pressure results in uplifting of kite. Molecules of air with high pressure exerts more force on kite from bottom and thus pushing it up in air.
The greater is the difference between air pressure above kite and air pressure below kite, greater is the amount of force exerted on kite and hence, it reaches a greater height.
<span>sulfuric acid - acid rain. Damages forests, limestone statues/buildings, lakes (alters pH) etc. Sulphur trioxide is a pollutant, which is also detrimental to health. Mark me the brainiest!</span>
