What factors influence the birth rate and death rate of plants and animals?

Answer 1

Birth Rate

- Changes in the position of women. More women go out to get jobs instead of being housewives or having children

- Being financially stable

- Adoption, no need to give birth

Death Rate

- Changes in attitudes towards abortion

- Secularisation

- Better healthcare so babies or children don't die after birth. Infant Mortality Rate in 2007 was 5 deaths per 1,000 in the UK.

Answer 2

Birth Rate: The birth rate of a society refers to the number of births per 1,000 people in that society. This figure is expressed as the crude birth rate (CBR) and is calculated without consideration of the sex or age of the population.

Death Rate: The death rate of a society is figured in the same manner but with regard to deaths rather than births and is expressed as the crude death rate (CDR).

Fertility Rate: The fertility rate of a society is the average number of children which would be born by a woman during her "childbearing" years. Replacement fertility is the fertility level at which women on the average are birthing just enough children to "replace" themselves and their partners in the population.

Notes taken from my anatomy and physiology study guide. Hope it helps!

Answer 3

3 factors affecting Death Rate

Poor medical facilities, natural disasters, famine

3 factors affecting Birth Rate

Contraception, war, lack of clean water