You sample the number of turkey oak seedlings in a
burned and unburned forest. You find 10 seedlings in
the burned forest and 90 in the unburned forest. If
the seedlings were randomly distributed in the two
forests, then the numbers of seedlings in each forest
would be the same. How many seedlings would you
expect in each forest if they were randomly
distributed?

Explanation:

1. Number of turkey oak seedlings in the burned forest (given): 10 seedlings

2. Number of turkey oak seedings in the unburned forest (given): 90 seedings

3. To find the total number of turkey seedings you must add the seedings found in the burned forest and the seedings found in the unburned forest:

4. If the seedlings were randomly distributed in the two forests, then the numbers of seedlings in each forest would be the same (given)

How many seedlings would you expect in each forest if they were randomly

distributed?

Since it is stated that the numbers of seeding in each forest would be the same, then you must divide the total number of seedings by 2:

Which means that you would expect 50 seedings in each forest if they were radomly distributed.

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

the answer is sex-linked recessive.