Or, for a medical example, suppose smoking multiplies the risk of lung cancer by some number R: then the Wald test can be used to test whether R = 1 (i.e. there is no effect of smoking) or is greater (or less) than 1 (i.e. smoking alters risk).
There are more than 900 species of Tardigrade or Water Bear, pictured. They're found everywhere in the world, from the highest mountains to the deepest oceans. Boil the 1mm creatures, freeze them, dry them, expose them to radiation and they're so resilient they'll still be alive 200 years later.
Seals and sea lions live most of their l â¦ ives in the water but come out on land to bask in the sun. They come up during the breeding season. They like deep salt water because it provides plenty of fish to keep them alive and healthy. Seals live in places where disturbance is minimal. They like islands and rocky shores where they can bask in the sun and be close to their source of food. Also, they like sandbars, where they can also bask in the sun.