<span>tundra--
</span>The tundra<span> is the biome characterized by the presence of permafrost. Permafrost is a layer just beneath the surface of the ground that never thaws, even in the middle of summer. The </span>tundra<span> is also known for being the coldest of Earth's biomes, getting down to -40 degrees Fahrenheit during the long winter.</span>
D fish as sponges don't exact have brains, hydra don't have brains and flatworms do not have brains.
The connecting piece of a sperm is packed with gonads that produce energy.
Sperm is the male reproductive cell and is derived from the Greek word "Sperma" Significance is Root.
Sperm cannot divide and have limited life span, but after fusion with egg cells through fertilization, a substitute orgasm begins developing, starting as a totipotent zygote
The Answer is: Science cannot answer philosophical questions.
