Which of the following is not an example of a fossil?

a fern imprint in shale

a trilobite in sandstone

footprints in snow

a petrified tree trunk

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

10111213141516lactic acid fermentation differs from ethyl alcohol fermentation in thato in ethyl alcohol fermentation co2 is also producedlactic acid fermentation can occur in all living thingsethyl alcohol fermentation can only occur in plantsonly lactic acid fermentation can produce more atp