Which planet is most like Earth in size and density?

Ineed with a hypothesis my question is can seeds sprout in different locations?

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei

Which of the following statements accurately defines epidermis? a. a thick protein fiber composed of the protein collagen b. hard, dense bone tissue found on the outer surface of a bone c. single layer of epithelial cells and the underlying basal lamina d. outer, protective layer of the skin composed of stratified squamous keratinized epithelial tissue