Q: What type of polarization does a negative object create> Choices: - common polarization - simple polarization - negative polarization - opposite polarization A:
opposite polarization

Q: What organism is an important pioneer on cleared rock and soil surfaces, such as volcanic flows and burned forests? Choices: - cysts - algae - pigment - lichen A:
lichen

Q: Q: Deep ocean currents are caused by differences in what property at the top and bottom? Choices: - diameter - mass - velocity - density A:
A: density

Question: Q: What do refrigerator magnets contain that make them stick to a refrigerator door? Choices: - steel - zinc - copper - iron A:
Answer: iron

*Question*
Q: What traits are those that are inherited unchanged in a hybridization? Choices: - alleles - mutations - recessive traits - dominant traits A:
**Answer**
dominant traits

(Question)
Q: What type of friction is friction that acts on objects when they are sliding over a surface? Choices: - spreading friction - static friction - rolling friction - sliding friction A:
(Answer)
sliding friction