Seeds dispersed by water are contained in light and buoyant fruit, giving them the ability to float. Coconuts are well known for their ability to float on water to reach land where they can germinate. Similarly, willow and silver birches produce lightweight fruit that can float on water. Plants which grow beside water often rely on water to transport their seeds for them. They may produce light seeds which float, or there may be fluff that helps buoyancy. ... They can colonise such isolated places because they both have very small, light seeds, which can be carried by the wind or by water.

Eye color was traditionally described as a single gene trait, with brown eyes being dominant over blue eyes. Today, scientists have discovered that at least eight genes influence the final color of eyes. The genes control the amount of melanin inside specialized cells of the iris. It was originally thought that eye color was a simple Mendelian trait, meaning it was determined by a single gene, with brown being dominant and blue recessive. It is now clear that eye color is a polygenic trait, meaning it is determined by multiple genes. Hence, colour of eyes is an inherited trait.

Some plants distribute their seeds by violently ejecting them so that they fall well away from the parent plant. This is explosive dispersal. They produce seed pods which dry in the sun. As a pod dries, tensions are set up in the wall of the pod eventually causing it to split along two lines of weakness. Some plants have pods that explode when ripe and shoot out the seeds. Lupins, gorse and broom scatter their seeds in this way. When the seeds are ripe and the pod has dried, the pod bursts open and the peas and beans are scattered. Heat and dangerous reactions are the cause of many plant explosions. Gas leaks, most often caused by poor maintenance, result in a number of explosions each year. When gas leaks come into contact with a source of heat, they begin to expand and can explode.

Bees sting either because they are confused, stepped on or threatened, and it is their only defense to get you away. Avoid bee stings by following these simple tips: ... If you see a bee hive, stay away and alert the people around you. Call a professional beekeeper and they will remove the hive if it is a threat to humans. When most people think of bee stings, they picture a honey bee. Honey bees that are out and about, away from their hive, usually won't sting anyone. They're just searching for nectar or pollen and don't want anything to do with people. ... In that case, they will attack and try to sting you.

A seed has the following parts:

• Seed coat: It is the outer covering the of seed. It protects the internal parts.
• Seed leaves or cotyledons: Cotyledons are present inside the seed. Cotyledons absorb the food from the parent plant and store it for the embryo. They also protect the embryo. Some seeds have two seed leaves like gram, pea, bean, etc. Such seeds are called dicot or dicotyledonous. Some seeds have only one seed leaf. They are called monocot or monocotyledonous.
• Embryo or baby plant: It is present inside the seeds which develop into a new plant. The embryo gives rise to a baby shoot (plumule) and root (radical).

A plant is a living thing that grows in the earth and has a stem, leaves, and roots. ... When someone plants land with a particular type of plant or crop, they put plants, seeds, or young trees into the land to grow them there. The plants that are likely most familiar to us are the multicellular land plants, called embryophytes. Embryophytes include the vascular plants, such as ferns, conifers and flowering plants. They also include the bryophytes, of which mosses and liverworts are the most common. Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, plants were treated as one of two kingdoms including all living things that were not animals, and all algae and fungi were treated as plants. 

Genetics is the study of heredity. Heredity is a biological process whereby a parent passes certain genes onto their children or offspring. Every child inherits genes from both of their biological parents and these genes, in turn, express specific traits. Genes are a set of instructions that determine what the organism is like, its appearance, how it survives, and how it behaves in its environment. Genes are made of a substance called deoxyribonucleic acid, or DNA. They give instructions for a living being to make molecules called proteins.

Genetics is the study of how living things receive common traits from previous generations. These traits are described by the genetic information carried by a molecule called DNA. The instructions for constructing and operating an organism are contained in the organism's DNA.  The scientific study of heredity. Genetics pertains to humans and all other organisms. So, for example, there is human genetics, mouse genetics, fruit fly genetics, etc.

Sodium Chloride is also known as salt. It occurs in oceans and sea waters. It is also found as rock salt. About 1% to 5 % of seawater is made of NaCl. It is a crystalline solid, white in color. In its aqueous form, it is called a saline solution.

Hydrochloric acid is present in the gastric juices in the stomach. The pH of the gastric juice is between 1 to 2. HCl has important role in the digestion process. HCl in the stomach causes the activation of enzymes. HCl is used to convert the enzyme pepsinogen into pepsin. Pepsin breaks up the peptides from the protein. The acid destroys the bacteria and the other microorganisms entered in the body through food. 

1. Seed Dispersal by Wind
2. Seed Dispersal by Water
3. Seed Dispersal by Animal and Birds
4. Seed Dispersal by Gravity
5. Seed Dispersal by Explosions

Light ones, like hydrogen and helium, typically move faster than heavier ones, like oxygen and nitrogen. The light atoms are more likely to reach escape velocity and escape to space. Our atmosphere is a mixture of gases that surround Earth. It is kept in place by the pull of Earth's gravity. If Earth was a much smaller planet, like Mercury or Pluto, its gravity would be to weak to hold a large atmosphere. Earth's gravity is strong enough to hold onto its atmosphere and keep it from drifting into space.

mouth,stomach and small intestine are the three sites places where food is digested.

Oxygen reaches to different parts of our body by hemoglobin converts into oxyhemoglobin and provides to all parts by traveling into the blood