The table shows the states of some elements. Why is it important to include the label "at room temperature" in the second column heading? (Look at the photo I attached to understand more)
A) The state of a substance will change if you take it outdoors.
B) Some substances can not be cooled.
C) Some substances cannot be heated.
D) Most substances exist in different states at different temperatures.

rising sea temps which are causing coral reefs to bleach and die out

glaciers are melting causing sea levels to rise wgich could flood out land

explanation:

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.