Answer:
The answer is:
E. They lack a plasma membrane.
The reason is that the plasma membrane is actually a very important part of their cell. Hope that helps! :)
A fish breathes by taking water into its mouth and forcing it out through the gills.
Presence of a teratogen in the body of mother during pregnancy is responsible for mal growth of child or incomplete growth which may lead to abortion, still birth or even a defective child.
<h3><u>Explanation:</u></h3>
A teratogen is a substance that is known to cause <em>defects</em> in growth of child during the intrauterine growth period. Thalidomide was used as a morning sickness drug which relieved the vomiting nature of the would be mother. But the presence of thalidomide was responsible for less growth of limbs of the child. Alcohol in intrauterine life may cause Fetal Alcoholic Syndrome which damages the fetus' sense organs and neural cord.
The presence of a teratogen during the 1st trimester is more serious than in last trimester because the main formation of different organs and systems take place in the 1st trimester and maturity takes place in third trimester.
Answer:
Sistema digestivo
Explanation:
Los principales sistemas del cuerpo humano son:
Sistema respiratorio, sistema circulatorio, sistema nervioso, sistema inmune, sistema digestivo, sistema óseo, sistema urinario, sistema reproductor y sistema muscular.
Como dice el enunciado, el estómago comienza a digerir los alimentos haciendo parte, así, del sistema digestivo cuya función es digerir los alimentos y absorber sus nutrientes.
Mesonychids are the hypothesized link between whales and the hooked mammals.
<u>Explanation:</u>
The scientific name of the Mesonychids are the mesonychia. Taxonmically hippos and pigs are the sister taxon to whales. The mesonychids are the evaluation of whales was determined within an extinct group of carnivores hooved animals. They found in the Asia and Europe.
Mesonychids live in both the land and sea world. The generation transformation influence the link between whales and the hooked mammals. its is also closely related to the cetaceans, which includes dolphins and whales.
