Each lung consists of millions of tiny air sacs called alveoli.
<span>Each air sac is surrounded by a tiny blood vessel called an </span>arteriole.
Answer:
Until the past decade, scientists, research institutions, and government agencies relied solely on a system of self-regulation based on shared ethical principles and generally accepted research practices to ensure integrity in the research process. Among the very basic principles that guide scientists, as well as many other scholars, are those expressed as respect for the integrity of knowledge, collegiality, honesty, objectivity, and openness. These principles are at work in the fundamental elements of the scientific method, such as formulating a hypothesis, designing an experiment to test the hypothesis, and collecting and interpreting data. In addition, more particular principles characteristic of specific scientific disciplines influence the methods of observation; the acquisition, storage, management, and sharing of data; the communication of scientific knowledge and information; and the training of younger scientists.1 How these principles are applied varies considerably among the several scientific disciplines, different research orgrecently, a few research institutions have developed guidelines for the conduct of reserch
Geologic time is a way to measure the sequence of significant events on earth over time. The sequence of significant events on earth are how rocks have been changing over time.
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