What is a good example of a positive feedback loop? a. feeling thirsty when you are dehydrated
b. the stimulation of milk glands in women who are nursing
c. production of white blood cells to slow the advance of a bacterial infection
d. production of insulin to counter the effects of eating sugar

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion