Which species is an example of an autotroph?
a. ladybird
c. frog spawn
b. bumblebee
d. lotus flower

Nucleic acid certain protein cell membranes certain carbohydrates

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these