Hãy phân tích các đặc điểm của ngành thực vật hạt kín để chứng minh rằng đây là ngành tiến hoá nhất trong giới thực vật.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.