读“甲、乙、丙、丁四地气温、降水量月份分配图”，完成下面小题。

“五十六个民族，五十六枝花，五十六个兄弟姐妹是一家……”，这歌曲唱出了我国各族人民的心声。我国少数民族中，人口最多的是（  ）

    Hi, I'm Brian. This is the photo of my family. My grandfather is wearing(戴着) glasses. He has little hair. The one next to him is my uncle. He is wearing a cap. My grandmother has gray hair. She is a kind woman. She is holding(抱着) my younger brother. He has short hair. The woman standing behind me is my mom. She has brown hair. There is a little girl sitting on the table. Her name is Cathy. She is my sister. She is wearing a green T-shirt and a pair of green socks. It's her favorite color. Which one is my father? Well, he is wearing glasses, too. He is in brown shorts and brown shoes. His name is Sam. Now, do you know where he is?

同时满足以下三个条件的函数是（     ）
①图像过点$\left(0,1\right)$；②在区间$\left(0,+\infty \right)$上单调递减③是偶函数 ．

有关岩石圈的说法，正确的是（　　）