<span>Active transport means</span><span> moving against a concentration gradient, from a lower concentration to a higher one</span>
Answer: Ionic bond
Explanation: Ionic bond is a type of chemical bond which occurs by removing one or more electron from one atom and it is attached to another atom which gives a negative and positive ions that attract each other. For example Sodium chloride Nacl2.
Answer:
D.Both systems control movement
Explanation:
Skeletal protect the organs and hold up the body to move and the muscular system is for controlling movement.
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Answer:nature selected for the more fit dark-colored papered moths in the new environment
Explanation:
it just seems like the best answer
