B. Two protons and two neutrons
Answer:A
Explanation:
i think it’s a bc blue whales and penguins and herring eats krill so the arrows for them would point to krill and well algae can’t eat u so
<span>temperature, colour, turbidity, odor and taste, and solid content.</span>
Answer:
operant conditioning
Explanation:
In operant conditioning, organisms learn to associate events that repeatedly happen together. The word "operant" should be changed to the word "classical." any relatively permanent change in behavior brought about by experience or practice.
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Answer:
Nuclei and vacuole
Explanation:
But in animal cell vacuole are temporary exist
