How many children should each woman have to do no more than replace herself and her mate (assuming one mate)?
As a global average, she should have about 2.1 children. The number is slightly higher than two to account for infant mortality.
Reproduction at this level is calledreplacement level fertility ("RLF")
Population momentum refers to population growth at the national level which would occur even if levels of childbearing immediate declined to replacement level. Replacement level- replace the husband and wife with two children so when the parents both die the children will take their place in the population. The cause of this is fertility rates
Fertility monitors test the level of LH or luteinizing hormone in the urine. An increase in the level of this hormone indicates that the ovaries are about to release an egg. Using a fertility monitor may increase a woman's chances of conceiving.
the total fertility rate for the world is 2.59.
Replacement level is the number of children a woman needs to have to ensure the population replaces itself.
Demographic momentum is the idea that a population will continue growing long after replacement fertility has been reached. Replacement fertility means that women are averaging 2.1 children each. Demographic momentum happens because of a large fraction of it's population entering their reproductive years.
The pH leve of soil depends upon it's fertility. If the soil is used to fertilizers or pesticides, it becomes acidic, loses it's fertility and pH level goes down.
How many children should each woman have to do no more than replace herself and her mate (assuming one mate)? As a global average, she should have about 2.1 children. The number is slightly higher than two to account for infant mortality
pH is important aspect of soil fertility because the level of pH will will influence what kind of organisms that will live in the soil. These can affect how the plants grow since each plant has an optimum pH level in which it will flourish.
Yes, with the help of fertility drugs (replacement hormones) and donor eggs it is very possible for a woman to have a baby years after menopause.
level as a result of similar rates of fertility and mortality.
Many farming areas in the world depend on silt deposited during floods to replenish the fertility in their soil. RB