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...et al. (1998) Life, the Science of Biology, 5th edn, Sinauer Associates Inc; Figure 14: Dr Richard Kessel and Dr Gene Shih, Visuals Unlimited/Science Photo Library; Figure 16: Photo printed with permission from O. L. Miller, B. A. Hamkalo and C. A. Thomas Jr; Figure 21a: CNRI/ Science Photo Library; Figure 21b: Dr Don Fawcett/Science Photo Library; Figure 22c: Dr Gopal...

...articles discuss arsenic levels in natural waters they are talking about the oxoanions arsenite, AsO33−, and arsenate, AsO43−. What are the oxidation numbers of arsenic in arsenite and arsenate? Arsenate(III) and arsenate(V) or +3 and +5 respectively, which are bioavailable forms of arsenic. The World Health Organization (2015) suggests a maximum safe level for...

...et al., 4th edition Figure 11: (a): EEG headcap, used to apply electrodes to the surface of the head; Min Jing/Shutterstock; (b): different types of brain wave activity measured using EEG: ScienceDirect Technological Basics of EEG Recording and Operation of Apparatus: Priyanka A. Abhang, Suresh C. Mehrotra, in Introduction to EEG- and Speech-Based Emotion Recognition,...

...et al. (2003). What was the difference in average beak size of all adults before the drought in 1977 and the average beak size of adults that survived the drought? Before the drought, the average size of adult beaks was 9.2 mm. The average beak size of adults that survived was 9.9 mm. Explain how the average beak size of birds changed from before the drought in 1977 to...

...et al., 2003). Fine-tuning of the breathing pattern is controlled by inputs from the pontine respiratory group (Figure 16). Information from stretch receptors in the lungs is also used by the respiratory centres to determine when the lungs have expanded to full capacity. Some neurodegenerative diseases, such as motor neurone disease, are characterised by respiratory...