1.No,they can't.
2.Both physical and chemical ways./ Both.
3.Because the lower leaves are easier for most animals to reach.
4.The leaf produces a chemical smell.
5.Eating prickly leaves which have poisonous water.
答案不唯一
1.No,they can't.
2.Both physical and chemical ways./ Both.
3.Because the lower leaves are easier for most animals to reach.
4.The leaf produces a chemical smell.
5.Eating prickly leaves which have poisonous water.
答案不唯一