Biology, 28.04.2021 19:50 alexandria3498
A beryllium atom contains 4 protons, 4 neutrons and 4 electrons. What is the atomic number of beryllium?
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 05:20
The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind
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Biology, 22.06.2019 10:30
How do the evolutionary chart and the video support the claim that all living things are made up of cells?
Answers: 3
A beryllium atom contains 4 protons, 4 neutrons and 4 electrons. What is the atomic number of beryll...
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