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An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
Observation the action or process of observing something or someone carefully or in order to gain information:
Answer:
Leeuwenhoek made his own microscope lenses, and he was so good at it that his microscope was more powerful than other microscopes of his day. In fact, Leeuwenhoek's microscope was almost as strong as modern light microscopes.
Explanation:
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Answer:
this is for the first image with the marshmallows in campfire-There are two main processes that heat a marshmallow: absorption of campfire radiation photons and contact with very hot air rising off the fire convection. If we place the marshmallow directly above the fire, we get both.
