What is a total solar eclipse? How are the sun, Earth, and moon alinged when a total eclipse occurs?

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Which of these parts of the membrane large moecules pass through it ?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons