The excretions of living organisms are best categorized as which type of factor in an environment ? a. biotic b. abiotic c. living d. nonliving

A) Biotic

Explanation:

It's definitely not abiotic and nonliving because they are living and who would categorized 'excretions of living organism' "living".

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.