Earth has seasons because its axis is tilted.
Mass/seconds^2 : mass per seconds squared
The five parts of the cell cycle are as follows: telophase, interphase, prophase, metaphase and anaphase. It ends with chromatids becoming separate chromosomes.
I believe that the drug described above is an example of a tetratogen. Tetratogens are agents and conditions such as viruses, drugs, chemicals, stressors, and malnutrition, which can impair prenatal development and lead to birth defects or even death. Others are behavioral tetratogens that tend to harm the prenatal brain, affecting the future child's intellectual and emotional.