When a system transforms energy from one type to another, the system always experiences A
energy loss through heat.
B
energy gain through light.
C
mass gain through nuclear reaction.
D
mass loss through chemical reaction.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

What pattern of migration do whales follow?

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.