The Europeans in the Caribbean felt the need to bring in enslaved Africans as laborers because the native American Indian workers had become physically weak due to diseases and the Caribbean plantations were in requirement of stronger labor force. The Africans by birth were very strong and they as slaves would perfectly suit the needs of the Caribbean plantations.
Answer: retrograde motion
Retrograde motion is an apparent change in the movement of the planet through the sky. It isn't real in that the planet doesn't physically start moving backwards in its orbit. It just appears to do so because of the relative positions of the planet and Earth and how they're moving around the Sun.
Answer:
Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. ... Since lionfish are not native to Atlantic waters, they have very few predators
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