Cane toads are large non-native poison toads in Australia after cane toads entered Australia scientist observed that the average head size in a population of toad eating snakes with getting smaller snakes with smaller heads are not able to eat this large cane toads what is the situation called A. speeches richness
B. stabilizing selection
C. fitness
D. directional selection

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.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.