Astronomers believe that there are about 100,000 comets that travel through our solar system. Comets are chunks of ice, dust, and gas that
orbit around our Sun. Which of the following can be observed from Earth
as comets get closer to the Sun? *
They explode
Their gases burn
Their tails get longer,
They begin to slow down ,

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

How do symptoms created by inflammation the doctor

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen