Across 5: predation
across 6 hominid
down 3 : Distribution
down 9 : glaciations
A centriole is a small set of microtubules arranged in a specific way
Answer:
True
Explanation:
In phase-contrast objective and a phase contrast optical systems is equipped with Light microscope .
Phase contrast microscope is used to differentiate unstained structures in a cell that differ in refractive indices and thickness. Thus it is usefull for examining living unstained organisms.
Light that passed through materials of different refractive index and/or thickness will undergo a change in Phase. The difference in phase or wave front irregularities cause variation in brightness of the structures.
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The answer is c gametophyte
The answer is b. plant structures.
Photosynthesis is the process by which plants use solar energy to produce glucose from carbon dioxide and water. Carbon dioxide enters the leaves, plant structures, through the<span> stoma and is incorporated into organic compounds. </span>