Gamete formation ____
gives rise to eggs or sperm in animals
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Methane is usually released directly to the atmosphere in environments without an overlying ________ water zone.
Fill in the blank(s) with the appropriate word(s).
What is the nutrient cycle in nitrification?
a. Nitrogen, nitrate, nitrite b. Ammonia, nitrite, nitrate c. Ammonia, nitrate, nitrite d. Ammonia, nitrogen, nitrite
Carbohydrates have which one of the following characteristics?
A) They are composed of carbon, hydrogen, nitrogen, and oxygen. B) They release energy when their peptide bonds are broken. C) They are indigestible by most organisms. D) They contain carbon, hydrogen, and oxygen in a ratio of 1-2-1. E) They are able to store and transmit genetic information.
The cephalic flexure indicates the ____ while the cervical flexure indicates the ____.
A. Forebrain-Midbrain Junction; Hindbrain-Spinal Cord Junction B. Forebrain-Midbrain Junction; Midbrain-Hindbrain Junction C. Hindbrain-Spinal Cord Junction; Forebrain-Midbrain Junction D. Midbrain Region; Hindbrain-Spinal Cord Junction E. Midbrain-Hindbrain Junction; Hindbrain-Spinal Cord Junction