Q: What is a decrease in the magnitude of the membrane potential? Choices: - digestion - ionization - inflammation - depolarization A:
depolarization

Q: Culprits in the common cold and aids, what infectious agents are far smaller and simpler than bacteria? Choices: - poisons - pathogens - parasites - viruses A:
viruses

Q: Q: Why do hummingbirds have long narrow bills? Choices: - to feed their offspring - to store food - for protection against predators - to reach the nectar at the bottom of flowers A:
A: to reach the nectar at the bottom of flowers

Question: Q: What is the first part of the large intestine, where wastes enter from the small intestine? Choices: - tectum - spleen - sacrum - cecum A:
Answer: cecum

*Question*
Q: What does rearrangements of chromosomes contribute to the emergence of? Choices: - clones - extinction - fewer species - new species A:
**Answer**
new species

Q: What term describes weathering that occurs as water expands when it freezes, wedging apart rock? Choices: - chemical weathering - cleavage - erosion - mechanical weathering A:
mechanical weathering