its mainly a response to the need for food and water.
Rain fall is what often governs animal migration on savannas. The African Savanna takes up approximately half of the entire continent.
Rainfall
Rainfall
It is often called an animal's pelt.
As far as animal migration goes there are four major types of migration are known. In complete migration, all members of a population travel from their breeding habitat at the end of that season, often to a wintering site hundreds or even thousands of kilometers away. The arctic tern is an example of a complete migrant. Individuals of this species travel from the Arctic to the Antarctic and back again during the course of a year, a round-trip migration of more than 30,000 kilometers! In other species, some individuals remain at the breeding ground year-round while other members of the same species migrate away. This phenomenon is known as partial migration. American robins are considered indicators of the arrival of spring in some areas but are year-round residents in other areas.Differential migration occurs when all the members of a population migrate, but not necessarily at the same time or for the same distance. The differences are often based on age or sex. Herring gulls, for example, migrate a shorter and shorter distance as they grow older. Male American kestrels spend more time at their breeding grounds than do females, and when they do migrate, they don't travel as far.Irruptive migration occurs in species that do not migrate at all during some years but may do so during other years. The primary factors determining whether or not migration occurs are weather and availability of food. For example, some populations of blue jays are believed to migrate only when their winter food of acorns is scarce.Read more: http://www.scienceclarified.com/Ma-Mu/Migration.html#ixzz0SX0YrrTf
Animal viruses need a living host animal to survive, so this is why eggs are often used to grow them. It was show that the flu virus could be grown that way in 1931.
Tree (tree of life)
It is often called a carcass.
The arctic tern. Not exactly north pole to south pole but arctic shores to antarctic shores.
Some of the factors that influence migration are lack of food or shelter or fresh water in an area. This will most often cause a population to begin movement or migration in search of food or water.
Human migration is the movement of people from one place to another, often in search of better living conditions, opportunities, or to escape conflict or persecution. Migration can be voluntary or forced, and can occur within a country (internal migration) or across international borders (international migration).
Jackals can be found throughout Africa, as well as some parts of Asia. They often live in savannas and woodlands.
Hopi men governed their villages. But women owned all the property and passed it down to their daughters.
to catch their food and get to other places for migration
Migration is the movement of people from one place to another, often in search of better opportunities, such as economic, social, or political reasons. This movement can be within a country (internal migration) or across national borders (international migration).
It depends on the animal
Rats
The noun is migration. The noun for something or someone who migrates is migrant. (It is often used specifically as an adjective meaning migratory.)
Human migration refers to the movement of people from one place to another, often crossing international borders. This can occur for various reasons, such as seeking better economic opportunities, escaping conflict or persecution, or for family reunification. Migration can be temporary or permanent.
Savannas are characterized by a continuous cover of perennial grasses, often 3 to 6 feet tall at maturity. They may or may not also have an open canopy of drought-resistant, fire-resistant, or browse-resistant trees, or they may have an open shrub layer. Distinction is made between tree or woodland savanna, park savanna, shrub savanna and grass savanna. Furthermore, savannas may be distinguished according to the dominant taxon in the tree layer: for example, palm savannas, pine savannas, and acacia savannas.