. What does a species first have to do in order to become a member of a community?

Why don't all places on earth receive the same amount of direct sunlight at the same place?

What is the primary purpose of a game reserve?

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed