The unit discusses the mass abundance of water on our planet and in our oceans which is a stark contrast to Sedlak's highlighting massive droughts and cities in danger of having no
drinking water. Briefly explain the reason that Sedlak gives for water shortages.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Coral have a symbiotic relationship with what in order to eat?

Follow the directions for self-quiz question 8, draw it, by labeling the appropriate structures with these terms, drawing lines or brackets as needed: chromosome (label as replicated or unreplicated), centromere, kinetochore, sister chromatids, nonsister chromatids, homologous pair, homologs, chiasma, sister chromatid, cohesion