Loss of habitat from any number of causes is the main reason for species endangerment currently.
The basic structure of bones is bone matrix, which makes up the underlying rigid framework of bones, composed of both compact bone and spongy bone. The bone matrix consists of tough protein fibers, mainly collagen, that become hard and rigid due to mineralization with calcium crystals.
Answer:
Scorpions and pseudoscorpions are fairly closely related, but no more so than scorpions are related to spiders, ticks and mites. ... Like all arachnids, both pseudoscorpions and scorpions have eight legs each, and chelicerae, exoskeletons and pedipalps.
Explanation:
Genetic variation allows for a greater chance of a population surviving. For example, if a plant species acquires a disease, without genetic variation the disease would just keep getting passed on to the next identical organism and the population would decline and eventually die. But genetic variation prevents that from happening, because you have so many other species in the ecosystem, and genetic variation is a product of sexual reproduction meaning that the offspring of the diseased plant has a possibility of not inheriting the disease.
