A. chemicals, the constriction of the pupil are usually caused by opiates anti-hypertension drugs.
The best way to do a observation can be a microscope or by taking notes ,and by , taking pictures or, asking questions about the subject that you and the teacher or you, your teacher and the class is talking about .! Hope this helps ..
Answer:
The somatic cells of fruit flies contain eight chromosomes, which means they have two sets of four chromosomes. Meiosis is the process by which sex cells are produced. Sex cells are haploid, which means they have one set of chromosomes.
Explanation:
Fossils should be your answer
Fossils usually are bones, as bones are strong, and can last for long amounts of time without breaking down.
hope this helps