In DNA, thymine always pairs with (cytosine / guanine / adenine) and cytosine always pairs with (adenine / guanine / thymine) by forming (hydrogen bonds / covalent bonds / ionic bonds) across complementary strands

To see a general view of a microscope slide, use low power. to see a more specific and detailed view, use high power.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the