The list below shows some events which took place at different periods in the geologic time scale. sharks appear. insects appear. fishes with jaws appear. which of these best orders the events from the earliest to the most recent? 3, 1, 2 3, 2, 1 1, 2, 3 1, 3, 2

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Select the word from the list that best fits the definition a system made of 25 satellites

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.