Spermatogenesis produces<span> four </span>gametes<span>, while </span>oogenesis produces one with two to three polar bodies left over. because oocytes contain not only genetic material but also mitochondria.
the technique of calorymetry is used to determine the energy content of food items.
A life expectancy of 2 to 5 years less than peers.
Answer: Because if you many different habitats are continuously destroyed than the food chain is ruined in those habitats from many animals going endangered.
<span>New combinations of genes may be produced by </span>immigration, mutation and sexual reproduction. These new combinations are also called variations.
