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
Answer:
send me the link to that website and ill research it for you
Explanation:
Ionic bonds result when electrons are tranfered between atoms. Covalent bonds result when valence electrons are shared between atoms. You should be able to identify whether an ionic or covalent bond is being formed between atoms.
Vector: anything that transmits a disease.
Malaria vectors can include mosquitos, ticks, and other blood sucking insects.
P.S.: Hope I Helped :)
Answer:
mosquitoes
Explanation:
more population means that they will eat more (decrease in mosquito population)
