<span>The levels of cell organisation in increasing size in a tree, as with all living organisms, are: organelle, cell, tissue, organ, organ system. Organ systems combine to make an organism. </span>
ANSWER: 8.9
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Energy is interrelated on Earth; people need to manage Earth's natural resources to meet current and future needs that effect the entire planet.
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<span>Polydactyly in its most common form, is an autosomal dominant mutation. Let's represent the mutation as P and the normal state as +. Thus, if both parents are heterozygous (P+), both would have the mutation (and thus have six fingered). They have 3/4 chances of having a child with the extra digit, 1/4 normal. </span>