Serena knows that scientists use physical similarities to classify organisms. She studies the figures of four different organisms. Refer to picture below. Which two organisms should Serena conclude are most closely related? 1 and 2
1 and 3
2 and 3
2 and 4

ANSWER = BRAINLIST

1 and 3

Explanation: I did it for Ed learning and got it right :)

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

propane is burned to provide the heat in many cooking grills. the chemical reaction for this process is shown in the equation below.

c3h8 + 5o2 ? 3 co2 + 4h2o + energy

what are the products in this chemical reaction?

3co2 + 4h2o + energy