Answer:
The fish did not yet exist when the old layers of rocks were deposited. In fact, animals with hard parts did not evolve until about 600 million years ago, which is only about 13% of the 4.5 billion year age of the Earth. Multicellular animals without hard parts left tracks in older sediments, but had no fossilize-able body parts.
Explanation:
<span>The answer is B. The stolon are hyphae that run horizontally and join one sporangiophore (vertically oriented hyphae with sporangia at tips) –with rhizoids as the ‘roots’ - with the other sporangiophore in the fungi population. They are analogous to rhizoids in eukaryotic runner plants. The attached diagram visually demonstrates this <span>description.</span></span>
Since it’s natural environment is very acidic, putting pepsin in a very alkaline environment would cause it to denature.
I believe it is D solid to gas
The main organ in mammals respiration is the lungs<span>. The lungs are actively ventilated via a suction-pump mechanism of inhalation and exhalation. Breathing is dependent upon the rib muscles and the </span>diaphragm<span>, a structure shaped like a dome-shaped floor just beneath the lungs. </span>
<span>Inhalation happens when the rib cage opens up and the diaphragm flattens and moves downward. The lungs expand into the larger space, causing the air pressure inside to decrease. The drop in air pressure inside the lung makes the outside air rush in. </span>
Exhalation is the opposite process. The diaphragm and the rib muscles relax to their neutral state, causing the lungs to contract. The squashing of the lungs increases their air pressure and forces the air to flow out.
