So sánh sự khác nhau về quá trình tiêu hoá thức ăn ở động vật chưa có cơ quan tiêu hoá , động vật có túi tiêu hoá , động vật có ống tiêu hoá

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

not sure if this what   you'r looking for would be percent composition

satellites are frequently used to make observations of the orbit on earth

what exactly is the question lol