Q: Approximately how many galaxies are there in the universe? Choices: - an infinite number - a trillion - an octillion - about a hundred billion A:
about a hundred billion

Q: The physical sciences can be divided into physics and what other science? Choices: - biology - astrology - phsycology - chemistry A:
chemistry

Q: Sympatric type of what occurs when a single population of organisms splits into two reproductively isolated communities within the same physical region? Choices: - biodiversity - extraction - accumulation - speciation A:
speciation