Which of the following is more typical of an animal skeleton? A. the sacrum consists of 5 fused bones
B. has a broad foot
C. has a chin
D. the femur is the longest bone

Study this image which statement best describes the rock shown check all that apply

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.

What is one affect on the australian environment due to the introduction of non-native european rabbits