Answer:
it uses it eye1s in the back of its head
Answer:
Compound light microscope
Explanation:
This is the ideal microscope because it requires the passage of harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.
C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases these specimens can not be wet and living.
The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.
<span>photic zone
The photic zone or daylight (Sunlit) zone is the part of the water in a lake or sea that is presented to such power of daylight which assigns remuneration point, i.e. the force of light at which the rate of carbon dioxide take-up, or identically, the rate of oxygen generation, is equivalent to the rate of carbon dioxide creation, comparably to the rate of oxygen utilisation, diminishing in this way the net carbon dioxide digestion to zero.
Since the photic zone is the place the greater part of the photosynthesis happens, the profundity of the photic zone is for the most part relative to the level of essential generation that happens here of the sea. Around 90% of all marine life lives in the photic zone. A little measure of essential creation is produced somewhere down in the deep zone around the aqueous vents which exist along some mid-maritime edges.</span>
Answer;
A. A-delta fibers
A-delta fibers transmit pain that is sharp, nonchronic, and well localized.
Explanation;
-The information about touch and pain is transmitted to the spinal cord and brain by primary afferent axons - these are the nerve fibers connected to the different types of receptors in the skin, muscle and internal organs.
-The different nerve fiber groups are; A-alpha, A-beta, A-delta and C-nerve fibers.A-alpha, A-beta and A-delta nerve fibers are insulated with myelin. C-nerve fibers are unmyelinated.
-A-delta nerve fibers carry information related to pain and temperature. A-delta nerve fibers can conduct action potentials as fast as a sprinter in the Olympics.
