Define the photic and aphotic zones in the ocean. What will be an ideal response?
The photic zone is the upper layer, where there is enough light for organisms to photosynthesize. The
aphotic zone is the rest of the ocean depth, where there is too little light for photosynthesis.
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Judge the following sentence according to the criteria given below: Marine sediment accumulations are interesting to oceanographers BECAUSE they often contain microscopic fossils that provide clues to the past geographic distributions of marine
organisms. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
________ metamorphism is the term used for the process in which rocks are altered by hot water.
A. Tectonic B. Burial C. Shock D. Hydrothermal E. Aqueous
The greenhouse effect involves warming of Earth's surface and the ________
A) mesosphere B) stratosphere C) ionosphere D) thermosphere E) troposphere
__________ the relationship between the direction on a map and the corresponding direction in reality
Fill in the blank(s) with correct word