Q: how are two ecozones always different from each other? a: a. they have different climates. b. they have different political systems. c. they have different economies. d. they have different animal species.

Is water wet? and is fire on fire?

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

The ratio of the measures of the three angles in a triangle is 14: 15: 11 find the measures of the angles