Answer: More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant. At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions.
Though mass extinctions are deadly events, they open up the planet for new forms of life to emerge. The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and birds to rapidly diversify
The answer would be B) Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate.
The highest level<span> of </span>organization<span> for living things is the biosphere; it encompasses all other </span>levels<span>. The biological </span>levels<span> of </span>organization<span> of living things arranged from the simplest to </span>most complex<span> are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.</span>
Answer: The two organisms are the same color. (2) The two organisms are the same height.
Explanation:
Apocrine glands develop in areas abundant in hair follicles, such as on your scalp, armpits and groin. Sweating is your body's mechanism to cool itself. Your nervous system automatically triggers your sweat glands when your body temperature rises.
