Xếp các loài động vật dưới vào các nhóm động vật. Voi, cá heo, cá sấu, cá sấu hỏa tiễn, đại bàng đầu trắng, châu chấu, giun đất, sao biển, bạch tuộc, dưa chuột biển, nhím biển, rắn hổ mang, rùa tai đỏ, giun đũa lợn, sán dây, san hô, sứa, rết, cua, đà điểu, ếch giun, ếch đồng, tôm tít, cá cóc bụng hoa, cá chép, cá lưỡng tiêm, cá myxin, cá bám đá, trùng đế giày

Proteins are made from amino acids. an amino acid has three parts that are joined to a central carbon atom. identify the three parts that create an amino acid.

Which excerpt from the land, part 4 best supports the claim that paul is a talented horseback rider? a/“figure that says more than anything else! now, i want to ride that stallion! " b/my daddy shook his head. "paul only rides horses he knows. ” c/? i glanced over at the other rider. the fellow was older than i, and had the weight of a man on him. d/a man out of alabama, man name of ray sutcliffe, told my daddy i was such a good rider, he wanted me to ride some races for him.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.