Which statements explain reasons why unconformities occur? check all that apply. 1rocks along a fault break and move. 2igneous rock forms at earth’s surface. 3rocks erode and sediment is deposited. 4no sediment is deposited over a long time. 5igneous rock forms between sedimentary layers

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Explain why ecosystem diversity results in species diversity in a healthy biosphere

Which of the following is a common response to cell signaling?