The fossil record shows that the first eukaryotes may have appeared on Earth (1 point) A. more than 4 billion years ago. B. more than 1 billion years ago. C. about 500 million years ago. D. about 100 million years ago.

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas