Answer:
A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is not a possible cause for the growth?a.An increase in the land space availableb.An increase in the population of prey it feeds onc.An increase in the biodiversity of the ecosystemd.An
Explanation:
The answer is C) DNA ligase checks the DNA for errors. :)
Answer: nearer
Explanation:
Underwater, objects appear NEARER than they really are on the surface DUE to Total Internal Reflection.
This phenomenon is best explained by the bending of light wave as it travels from one medium to another, making the APPARENT depth differ from the REAL depth.
Answer:
e) Mechanical Isolation
Explanation:
Mechanical isolation occurs in plants. And is associated with the co-evolution of two different species attracting separate pollinators to prevent pollen transportation to the other species.
Take for example,
The white sage and black sage. Black sage is dependent on honeybees for pollination while white sage requires carpenter bees for pollination even thou they share the same geographical region
<span>tying shoelaces
Let's look at the available options and see what can and can't be reversed or undone.
tying shoelaces
* This is pretty simple, you can tie some shoelaces, untie them, and repeat as many times as you want. So this is a reversible physical change.
filing nails
* When you file nails, you start with one large nail and end up with a smaller nail plus a lot of "nail dust". If you wanted to reverse that process, you'd somehow have to convert that "nail dust" you created back into original nail. And that's not possible. You might be able to glue the dust back on, but that would result in a mixture of glue and nail dust, not original nail. So this is not a reversible physical process.
cracking an egg
* Once again, it's easy to crack an egg. Not so easy to then uncrack it and end up with an undamaged egg. So I wouldn't call this process reversible either.
cutting hair
* So for each hair you start out with a long piece of hair, then you cut it into 2 or more shorter lengths. You might be able to glue those pieces back together, but that wouldn't result in a piece of uncut hair, it would instead result in several pieces of hair glued together. So this process isn't reversible either.
So of the 4 available choices, only tying shoelaces is reversible.</span>
