but unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. at very high levels, radiation can kill an animal or human being outright by killing masses of cells in vital organs. but even the lowest levels can do serious damage. there is no ...
Life undergoes natural selection, or selective forces in a given environment that allow one type to thrive and reproduce more. As you might recall from biology class, genes are the units that instruct a cell what to do — whether to make your hair color brown or blonde or your eyes green...
People become generally less healthy, and thus less able to reproduce. Population pressure leads to war. Unsanitary conditions and close proximity lead to a disease outbreak. We improve resource generation and infrastructure, increasing the carrying capacity. Humans are also capable of voluntaril...
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MALE STUDENT: I've read that salmon also help keep streams healthy.FEMALE PROFESSOR: Right.Salmon contribute important nutrients like carbon and phosphorous,and these nutrients promote diversity in the stream environment.OK. Um, so salmon need trees to successfully reproduce. But surprisingly, trees ...
inside their bodies as humans do.Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years.And they give birth to fewer than ten young sharks.For this reason, overfishing of sharks is of special danger to the future of the animal. ...
You can even use smaller prices like old teacups or glass cylinders to make a set of these plants. Some white stones can be placed around these plants to catch the eye of the viewer. There are thousands of things you can do to make it look good!
If you want to be healthy there are several things you should bear in mind (and these points apply equally to conventional and alternative approaches to health):Be informed. Getting independent information on your condition and your choices for healing is vital. Where possible always get more ...
Vanity metrics are measurable things with little or no impact. Learn more about why they're used, how to identify them, and different examples.
Bees benefit flowering plants by helping the plants reproduce, via pollination. Because plants cannot seek out mates the way animals do, they must rely on outside agents, called vectors, to move their genetic material from one plant to another. Such vectors include bees, certain birds and wind...