This illustrates <span>absolute threshold. The correct option among all the options that are given in the question is the second option or option "B".
</span><span>A spot in the middle of the retina that only contains cones is called the fovea. The correct option among all the options that are given in the question is the third option or option "C".</span>
The Phytoplankton <span>support nutrients in water and from the base of many aquatic ecosystems.</span>
Answer:
matter
Explanation:
"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"
B-Kidneys
The kidneys act as filters that strain urea and excess salts from the bloodstream to release them in the urine.
Dietary fiber and fluids (mark brainliest)
