Saturn has 62 confirmed moons of which 9 are waiting to be officially named. Saturn's largest moon Titan is bigger than both Mercury and Pluto. Titan has a very thick atmosphere which is mostly nitrogen. Earth's atmosphere is also mostly nitrogen. Saturn also has many icy moons like Mimas which has a large crater that is 1/4 the diameter of the moon, and Enceladus which has very dark material covering one side and very bright material on the other side. Some of Saturn's smaller moons help keep Saturn's rings stable by orbiting in or near the rings. These moons are called "shepherd moons" and use their gravity to keep the small ring particles in a stable orbit. Some of the gaps in Saturn's rings are caused by these moons. More moons are constantly being discovered so check the NASA Saturn site for the latest.
Answer:
these particles had a negative charge
Explanation:
The more charge a particle has the stronger it is attracted or repelled from the charge
Answer:
1- Presence of phenotypic variation
2- some phenotypic variation due to genetic variation
3- the given trait has an impact on fitness
Explanation:
The evolutionary theory by natural selection proposed by Darwin in his publication “On the origin of species” (1859) is based on a series of assumptions that enable to understand the amazing biodiversity on the Earth. First, individuals are not identical among them, i.e., there exists variation in the traits among the members of a given population, species, etc. Second, phenotypic variation leads to differential survival and reproduction of the organisms that are best fitted to the environment (i.e., competence among the members of the population). Finally, phenotypic traits are passed from generation to generation (i.e., phenotypic variation is inheritable), thereby favoring offspring from parents more adapted to the environment.
The nitrogenous bases guanine and adenine are called a. purines.
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Answer:
Plasma membrane is also known as cell membrane which protects every living cells from outside environments.
- Plasma membrane composed of phospholipids bilayer embedded with highly charged molecules such as proteins and carbohydrates.
- Plasma membrane is selective in nature to ions (organic molecules) and regulates the movements of substances inside and outside of the cells. (regulates the transport of substances)
- Plasma membrane keeps out toxic substances from the cell acting as a barrier.
- They contain receptors and channels which allow specific molecules such as ion, nutrients, metabolic products, that mediate the extracellular and cellular activities.