Select all the correct answers. Which two statements about composite materials are true? They’re made up of more than one substance. They have the same or similar properties as the materials used to make them. They’re always made of metal. They’re readily available in nature.

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

What problem would a person most likely have if her kidney did not work correctly?