Does the plant cell have a nucleus?
a. yes
b. no

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Explain the process that creates the heat of the sun?