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Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate , sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate .
17 lut 2021 · To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.
Inspire your students with thousands of free teaching resources including videos, lesson plans, and games aligned to state and national standards.
Learn what biodiversity is, why it's important, where it's found, how it comes into existence, how you study it, why it's threatened, and how it can be protected. Check out all 33 short videos in this course, created by the California Academy of Sciences in collaboration with Khan Academy.
KIDS is a local public television program presented by WUCF. More Science and Nature Shows. Enjoy fun experiments designed for children while learning more about science.
Kids learn about all sorts of biology subjects including the cell, animals, plants, the human body, genes, inheritance, diseases, and microorganisms.
15 kwi 2021 · Plants are Living Things | PreK-Kindergarten Science. Special | 28m 19s |. My List. In this lesson, students will learn all about plants. They will learn about different plants, what plants...
