Question 3: Adapting to Change Which statement is true about what a stimulus is?
a. A change in an organism's respiration that causes it
to gain energy.
b. A change in an organism's surroundings that causes
it to do nothing.
c. A change in an organism's life cycle.
d. A change in an organism's surroundings that causes it to
react.

i think its c. amphipod

b) the inside picture would look at a very high temperature in a very low ph

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

the answer is