Energy cycles through ecosystems because it returns to the Sun.
A True
B False

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

What controls activities within a eukaryotic cell?

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse