How can sharks use their ampullae of Lorenzini to discern between healthy and injured prey items?
What will be an ideal response?
All living organisms put out low-level electrical fields. Under conditions of stress or injury, the injured animal increases the strength of the electric field around it and the shark is able to recognize this heightened electrical field as that of an injured animal that would make easy prey.
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Water is most dense and thus heaviest at 4?C. At 0?C, ice forms and the ice can float on liquid water. Suppose ice were more dense than water at 0?C. What would happen in a lake at this temperature?
A. The ice would cover the bottom of the aquatic system and would build up in layers over time. B. Ice would not form because solids are always less dense than liquids. C. The ice would cover the surface of the aquatic system and would never melt. D. The cold temperatures and the subsequent ice formation would prevent hydrogen bonds from forming between the water molecules, thus causing the existing ice crystals to become disassociated from each other.
The continents were once joined in one interconnected landmass called Pangaea, but moved slowly into their current positions. The process by which the continental (tectonic) plates moved slowly over time is called ________
Fill in the blank(s) with correct word
Describe the five main types of connecting neurons in the retina and their functions. What will be an ideal response?
What is one of the benefits of genetic engineering of plants?
A.) reduced diversity among crop plants B.) increased allergies to plants and pollen C.) elimination of natural crop pollinators D.) enhanced disease resistance in crops