The stars found in nebulae like the Orion Nebula probably formed
A) within the last few million years.
B) about 10 million years ago.
C) hundreds of millions of years ago.
D) billions of years ago.
E) at the beginning of the universe.
Question 2
What two energy transport mechanisms, in order from outside the core to the surface, are found in the Sun?
A) convection, conduction
B) radiative diffusion, convection
C) conduction, radiative diffusion
D) radiative diffusion, conduction
E) conduction, convection
All objects in the image are distant galaxies – not stars
The Gum Nebula
Researchers have found that science instruction can be quite effective in grades 4 to 7.
Structures formed by phospholipids in an aqueous environment.
Elements Found in Organisms
Cyanobacteria from 850 million years ago (Photo 2)