Describe the four different types of polysaccharide molecules that are produced and consumed by living organisms.

Athermometer is placed in water in order to measure the water’s temperature. what would cause the liquid in the thermometer to rise?

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

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