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Questions in biology
[Open]Which substance is constantly processed by some excretory organs even though it is not excreted by the excretory system?
[Open]This omnivore eats berries in summer and salmon in fall. What is it?
[Open]What does "property" mean in science?
[Open]The circulatory system is divided into two main parts, the _________ circulation and the pulmonary circulation.
[Open]Protecting an entire ecosystem ensures that
[Open]Is breathing completely involuntary?
[Open]What two instruments made navigation much easier in the 1900s?
[Open]What makes lipids different from other organic compounds?
[Open]What is the haploid number of chromosomes in humans? A. Twenty-three
[Open]What has improved to make scientists better able to understand the cell?
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