Marita is analyzing the population of various songbirds in her neighborhood. She estimates how the population is increasing by and decreasing by , as different birds enter and leave the area. She thinks that the blue jay population increased by because it doubled over a short time, but then it followed a pattern of when the population approached the .

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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.

the answer is definitely a