The photic zone

a.

extends to the bottom of the open ocean.

b.

extends to a depth of about 200 meters.

c.

is deep, cold, and permanently dark.

d.

is where chemosynthetic bacteria are the producers.

I did an experiment on the enzyme catalase. The aim was to determine effect of temperature on enzyme catalase. I was told a hypothesis was a true statement about the experiment. What is can be the hypothesis of this experiment?

Why should the diazonium salt not be isolated and stored for later use?

Suppose an assassin uses ricin, a translation inhibitor, to poison her victim. Place the events in chronological order, starting from the poisoning and ending with the death of the victim.

3 ways in which a country address or improve the problem of illegal immigration

Which example best illustrates the difference between a community and a population? A) The two terms are interchangeable, a population IS a community. B) All the people in a town would be a community; all their cattle would be a population.

Suppose that a species of fish has split into two populations in a lake: one on the eastern side and one on the western side. How could you determine whether the two populations constitute different species? A.

Organisms interact with their environments, exchanging matter and energy. for example, plant chloroplasts convert the energy of sunlight to

What is the function on an ovary in a flower?

You are a chicken breeder interested in developing new hybrids that have many of the genes from the original ancestor birds. what should you breed your birds with

He use of the isotope 32p as a tracer element in the study of invasion and lysis of bacteria by viruses has shown that