Which describes the light-dependent stage of photosynthesis?
(Select all that apply.)
A-Photosynthetic pigments absorb energy from light.
B-Hydrogen ions (H+) are moved against their concentration gradient.
C-Carbon dioxide is incorporated into a preexisting sugar molecule.
D-Water is split, which produces oxygen.

Answer ,A-Photosynthetic pigments absorb energy from light,

D-Water is split, which produces oxygen

Explanation:

Water is split, which produces oxygen.

Light dependent reaction uses energy from sunlight that is absorb by the chlorophyll pigment of the leave. This is is what is used in light dependent reaction where water is split into hydrogen and oxygen. The oxygen is released into the atmosphere and the hydrogen with NADP produced NADPH , ATP is ls also formed from the reaction of ADP+P during light independent reaction which is harness to produce sugar.

ATP- Adenosine tri-phosphate

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above