Answer:
C.
Explanation:
Food chains focus on one set of organisms and their predators/prey, while food webs show multiple for each. Hope this helps. :)
Dissolving doe not indicate or guarantee a chemical change. Most of the time it is a physical change.
Unchanged solid in a liquid does not even indicate any change.
Solid floating on top of liquid does not indicate any change, physical or chemical.
When a mixture creates a new compound (gas from mixing solid and liquid), there is a chemical change.
Answer:
2
Explanation:
The bones in the forelimbs of penguins and seals are best described as analogous, while the flippers of penguins and seals are homologous.
Analogous structures are structures that are similar in different organisms, even though they are unrelated to each other. For instance, the wings of birds and the fins of a penguin or a fish.
Homologous structures are similar structures in related organisms. Both the penguins and the seals have flippers. Another example is the human arm and the wings of a bat. Both have similar structures internally, but while a human lifts items with their hands, the birds use theirs for flying.
Answer:
Enzymatic activities is usually efficient when it happens at an optimum temperature. This temperature aids its proper functioning and too much of heat could as well denature the enzyme.
When you reduce the incubation time of an enzyme to 30 minutes , the enzyme may or may not have enough time to reach the amount of free energy needed to drive the enzymatic reaction.
Answer:
d. As depth increases, temperature decreases quickly at first, but eventually becomes constant.
Explanation:
As seen on the graph above, the<em> temperature decreased quickly as the depth increased</em>. It is seen between <u>200 meters to 500 meters</u> in depth. The change in temperature is from <em>26 degrees</em> to <em>8 degrees</em>, which is<em> </em>an<em> 18-degree difference. </em>After which, the temperature decrease<em> slows down </em>and becomes <u>constant</u> starting at <em>2,700 meters</em> going deeper to <em>4,000 meters. </em>The temperature is being maintained at <em>1 degree</em>.
The other three choices above<em> (a, b, and c) s</em>how <u>both an increase in temperature with an increase in depth</u>. <em>This makes the choices incorrect.</em>
