The answer is cornea…..lens. Most bending of light entering
the eye is bent by the cornea. The lens of the other hand adjusts this bending
further, to focus it squarely on the retina. This is why the focal point of the
lens can be adjusted by changing its shape.
Answer:
When the level of calcium ions declines the sarcoplasm stops the sliding.
Explanation:
Sarcoplasm can be described as the cytoplasm for the cells of muscles. It contains important structures such as the myofibrils.
The following steps would occur when the level of calcium ions would decline:
The sarcoplasm would stop the sliding of the thin filaments.
The actin filaments would be migrated in the M line
This would lead the bands in the I region to shorten.
The Z region would compress.
The H region would diminish.
The answer to this question would be: oxygen
The presence of oxygen allows the cell to do the aerobic reaction. Using in metabolism will result in a much higher number of ATP produced.
When there is no oxygen, the cells make energy using the anaerobic reaction that gives a low number of ATP.
Answer:
Their survival is correlated to water clarity because kelp, the main food of otters' prey (sea urchins), needs clear water to thrive.
Explanation:
Otters are extremely important organisms, also known as "<em>keystone</em>" species. They keep aquatic ecosystems healthy because they control other populations such as sea urchin populations that consume kelp, sometimes in excess.
For this reason, otters prefer inhabiting near the kelp, which generally grows in clear waters near shores. They also prey on crabs, marine snails, squid, etc. as they possess the ability to dive as deep as 250 feet.
Therefore, their survival is correlated to water clarity because kelp, the main food of otters' prey (sea urchins), needs clear water to thrive.
Answer:
This happened because the check points in cell cycles are not working properly which can help to stop cells having abnormal chromosomes.
See the attachment for proper understanding what actually happened in cell cycle check points.
