In 1940 the average sperm count per ejaculation was estimated to be113 million/ml with a normal ejaculate volume equaling 3.40 ml. In1990 this average had decreased to 66 million sperm/ml ofejaculate. That's almost a 50% reduction! During this time theamount of ejaculation had also decreased down to about 2.75ml. In2010 it is estimated that the total ejaculation amount isapproximately 1.5ml, with the sperm counts being down to 60 millionin the average male, and in 15-20% of young males, the sperm countis below 20 million.

1. What is the minimum amount of sperm per volume to be consideredfertile?

2. Propose (research) potential explanations for the steady declinein sperm counts within males. (hint: age, wearing \"tighty whities\"and nutrition are not valid reasons as that affects individuals.These count drops are impacting the population!)

3. Research potential explanations for the decrease in the volumeof semen within males. IS there a link between the decline of spermand ejaculate? Explain.

4. What impact on fertility do lower ejaculate amounts have?

5. What treatments are available currently to treat infertility dueto low sperm counts and low ejaculate levels?

Remember when answering and researching these answers wikipedia,mayo clinic, WebMD are NOT valid sources. This topic is moretechnical so beware of propaganda sites selling testosteroneboosting supplements as that is not valid resources. You reallywant to find peer-reviewed researched articles in journals. Allwork must be properly cited. Plagiarism will not be tolerated.