Twenty-five-year-old jonah is wondering whether his rate of sperm cell production is within normal range. for a man his age, his doctor will likely tell him that the average rate of production is about sperm per second.

1000 sperm per second

Explanation:

Spermatogenesis is the process through which sperms are produced, testicles constantly produce sperms in the male body but the whole process takes almost 64 days normally.

For a man of age 25 the normal range of production of sperm per second is 1000. However, at the end of the cycle of sperm production that is after 64 days, 8 billion sperms are regenerated.  

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus