When does robert hooke coin the word cell after viewing the cork cells with primitive microscope

What would be an example of hypothesis for goldfish respiration lab

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Which of the following can be assumed about the layers in areas 2 and 4