Answer: As in other higher vertebrates, the frog body may be divided into a head, a short neck, and a trunk (see Vertebrates). The flat head contains the brain, mouth, eyes, ears, and nose. A short, almost rigid neck permits only limited head movement. The stubby trunk forms walls for a single body cavity, the coelom.
Explanation:
The correct answer is climate. Many mass extinctions of life occurred due to major changes in climate. Climate change is as also known as global warming affects many things. It is causing the rising temperature of the Earth's surface due to human's abusive usage of things.
Answer is the phylum is Pteridophyta. Pteridophytes are first land plants, examples ferns, <em>Lycopodium, Selaginella. </em>Members have liginified cells and developed conducting tissues called vascular system to conduct water and synthesized food. They reproduce through spores, seeds do not develop in pteridophytes.
<span>This is the phosphorus and carbon cycle. By breaking down dead carbon-containing objects and returning them to the soil, these bacteria are able to allow the nutrients to be re-used by future generations of plants and animals, continuing the cycle.</span>
