Where's the evolution?
The physics of light affects not just how blue water looks to us, but how the animals living in the world's oceans, lakes, and rivers are able to find food and each other — and this, in turn, can impact their evolution. Natural selection favors traits that perform well in local environmental conditions. Many fish species, for example, have evolved vision that is specifically tuned to see well in the sort of light available where they live. But even beyond simple adaptation, the physics of light can lead to speciation. In fact, biologists recently demonstrated that the light penetrating to different depths of Africa's Lake Victoria seems to have played a role in promoting a massive evolutionary radiation. More than 500 species of often brightly colored cichlid fish have evolved there in just a few hundred thousand years!
C is the answer bc it always been thought to me
Answer:
The young blood should understand the value of time. It is very precious and never waste it in bad things. Young blood should do everything to complete their dreams and also serve to their country.
Explanation:
The young generation is the future of any country. There role is much important than others. They are the essential and integral part of the society and we can not imagine a country or a society without a young blood. So it is rightly said that todays generation or young blood will be the future of a country. They are the driving force and make government to make the their decision at prior. Young blood is the future of a society or community can change the country. Thus they should live in hope and to participate in building the future of the country. They should be honest, good and hard worker and should contribute to their country service. Young blood is the backbone of a country that can change the value of a country. Physical education and sports can teach a lot to them.
Answer:
The strategies used to treat osteoporosis are as follow:
- A diet based on foods rich in calcium and Vitamin D (e.g., poultry and fresh fruits)
- Regular sun exposure
- Regular physical exercise
Explanation:
Osteoporosis is a prevalent disease in older people that makes bones more fragile/porous, and therefore more likely to suffer breaks. This condition can substantially reduce the quality of life, especially in people aged at least 65 years. Osteoporosis is caused by poor nutrition, i.e., by the lack of foods rich in nutrients, especially rich in calcium and vitamin D (e.g., milk, fresh fruits, etc), which leads to a decrease in bone density. In UAE, it has been shown approximately 70 % of its population suffers from Vitamin D deficiency and calcium deficiency. Exposure to the sun helps the body to synthesize vitamin D, contributing to prevent this disease. Moreover, regular physical activity may improve bone density and therefore reduces the risk of fractures derived from osteoporosis.
