Answer:
The answer is Teratogen.
Explanation:
It is defined as any physical, chemical or biological substance, which is capable of producing an attraction in normal embryonic development, always causing congenital malformations in the child. Teratogenic agents are substances that cross the placental barrier and damage the fetus that grows inside it. Teratogenic agents do not work the same in all women. Influence the exposure time and the dose of harmful effect. It also depends on the trimester in which the pregnancy is found.
4. The purpose of having a light source on a microscope is to allow better viewing.
The correct answer for the question is B. Fossil.
Fossils are remnants, traces of animals or plants, from the past ages that have been preserved. Fossils may be classified as cast and mold fossil, insect preserved in amber, petrified wood, compression fossil of a fern and pyritized ammonite.
In a home, living things include microorganisms (e.g., bacteria), pets and humans, whereas non-living things may include water, viruses, etc.
<h3>What is a living thing?</h3>
A living thing is any biological system composed of cells, which are the fundamental unit of life.
Viruses do not have cells and therefore they can be considered non-living parasitic entities, whereas abiotic factors such as water are also considered non living things.
In conclusion, living things include microorganisms and humans, whereas non-living things include water.
Learn more about biotic factors here:
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