23. Where are earthquakes most likely to occur?
A where Earth's tectonic plates are
moving together
B where
magma cools slowly beneath
Earth's surface
C where Earth's lithosphere is in
constant, slow motion
D where Earth's seafloor is spreading
into deep ocean trenches

Explain why phospholipid molecules form a bilayer. (3 marks)

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.