Answers: 1
Biology, 21.06.2019 18:00
The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community
Answers: 2
Biology, 22.06.2019 06:30
Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide
Answers: 2
Biology, 22.06.2019 10:20
Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false
Answers: 2
7) Normal human body cells contain
chromosomes and are called diploid cells....
chromosomes and are called diploid cells....
English, 21.07.2021 17:30
English, 21.07.2021 17:30
Mathematics, 21.07.2021 17:30
English, 21.07.2021 17:30
Mathematics, 21.07.2021 17:30
Mathematics, 21.07.2021 17:30
Mathematics, 21.07.2021 17:30