Which of the following pairs of characteristics would be best to begin using when creating a dichotomous key for a fish, a lion, a wolf and frog? 1a. has eyes
b. has no eyes

1a. has a mouth
b. has no mouth

1a. has nostrils
b. has no nostrils

1a. has fur
b. has no fur

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion