For most females the first menstrual period happens between ages 9 years and 13 years and continues until 45 years of age to 60 years of age. Calculate the range of their possible reproductive years.​

Acommon kind of mechanical weathering is called

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

What name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna?