Answer:
A. lipids
Explanation:
Lipids is the macromolecule that makes up the majority of the cell membrane.
Hus, when the sister chromatids separate, each chromosome is not the same as when it started--all traits from one parent or the other. Crossing over<span> increases</span>genetic variation<span>. </span>Crossing over<span> is the process by which </span>genetic<span> material is exchanged by non-sister chromatids during meiosis</span>
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!
Five changes associated with aging include
1. There is progressive reduction in physical health due to loss of muscle tissue
2.There is occurrence of vision changes whereby it becomes impaired in older people
3. Skin becomes less elastic and age spots and wrinkles appear on the skin
4. Hearing also becomes impaired
5. length of sleep at night massively decreases.
Acceleration is change in velocity divided by time or
V/t so 60/3 = 20
Acceleration refers to the velocity (magnitude and direction) and speed refers only to the highest rate of speed something can obtain.
