Define circadian rhythms and compare what happens when your rhythms are disrupted and when you are deprived of sleep. Someone help me out please

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.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

Which statement names a physical property of wood? wood does not rustwood can burnwood can rotwood is softer than coal