A plant can have either broad leaves (B) or narrow leaves (b). A plant with genotype Bb is crossed with a plant with genotype bb. Which Punnett square
correctly represents this cross?
B
b
B|Bb
Bb
O A.
B|Bb
Bb
B
в вы
Bb
O B.
b Bb
Bb
b
B Bb
Bb
O c.
b
Bb
Bb
b
BBb
Bb
O D.
b
bb
bb

c. would be the answer : )

explanation:

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 earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers