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Clarifying some points on evolution and intelligent design.

Why do astronauts appear weightless despite being near the Earth?

From the extinction of the dinosaurs to humanity.

Overview of fertilisation and early human development. From conception leading to a zygote to blastocyst, embryo and fetus.

Basics of gravity and the Law of Universal Gravitation.

How variation can be introduced into a species.

Diffusion and Osmosis

Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase.

Molecular structure of DNA. Nucleotide. Nitrogenous base, phosphate.

This unit is about how things move along a straight line or, more scientifically, how things move in one dimension. Examples of this would be the movement (motion) of cars along a straight road or of trains along straight railway tracks.