As you learned, thalidomide is a teratogen meaning that causes birth defects when taken by pregnancy women. another teratogenic compound is alcohol, which is known to cause birth defects in developing child’s nervous system and contributes to the development of fectal alcohol in terms of environmental factors that play a role in organism also development? what does the presence of teratogen mean for pregnancy women who wish to have a healthy pregnancy for both themselves and their future children?

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.

Explanation:

A teratogen is a substance that is known to cause defects 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.

There would be one bar shorter than the bar for peaches.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.