Answer:
the different colored liquids would've the manipulated while the amount of hummingbirds that visit is the responding variable.
The right option is; dark-field microscope
A light microscope that makes the specimen appear light on a dark background is called a dark field microscope.
Dark field microscopes are light microscopes that are used in different ways to clearly view various specimens that are unstained, transparent, and hard to see using a light field unit. Dark field microscopes are very effective because they show the details of unstained and live samples. It is also very simple to use, and inexpensive to set up.
Narcotic drugs are analgesic that exert a depressing action on the central nervous system.
Hope this helps!
Organism
Population
biological community
ecosystem
biome
biosphere
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Population is a group of organisms of d same species
A biological community is the population of organisms living together and interacting in a given area
Ecosystem is the interaction between living and non living organism in a community
Biomes are biological communities that are formed in response to a shared physical environment
Biosphere is the part of the earth that contains living organism
Answer: I believe the correct answer is choice A. The chromosomes are duplicated.