Male and female reproduction systems have several similarities and several differences. All BUT ONE describes a difference between the two
es 0)
A)
Females release one ova/month while males produce thousands of
sperm/day.
B)
Males gonads lie outside the body; female gonads are found within the
body
Male gametes are expelled from the body; female gametes are not expelled
from the body
D)
In males the reproductive and urinary tracts share a common opening; this
is not the case for females.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)