Pea plant clones are given different amounts of water for a three week period. The first pea plant receives 400 mL each day. The second pea plant receives 200
mL each day. The third pea plant receives 100mL each day. The fourth pea plant
does not receive any extra water; the plant only receives natural ways of
receiving water. The height of the pea plants is recorded daily. Identify the
independent variable. *
i need to know a number

Name the type of chemical that speeds up digestion

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

What is the 77 element on the periodtic table