Tundra is a biome characterised by temperature below -25° Fahrenheit and permafrost ( frozen soil sub layer ) . It is of two types, alpine and arctic. Tundra animals are adapted to living in very cold temperatures. They also have the ability to raise offspring during very short summer time. Some of them migrate to warmer areas during harsh winters while others hibernate.
Many types of mammals, fish, birds and insects are found in tundra biome. Reptiles and amphibians are absent due to extreme cold climate. These animals interact with each other in many ways. They compete with each other for resources and also hunt each other for food. Competition is more harsh since resources are very limited here.
A typical example of such animal interactions is the food web present here. Plant species ( producers ) are consumed by herbivores like musk, oxen pikas etc. These herbivores are hunted by secondary consumers like brown bears and arctic foxes.
The tundra ecosystem is one of the coldest ecosystem on the earth, which has few trees, high winds, much snow, and low rainfall. Some of the species found in that environment are arctic foxes, caribou, and polar bears.
The independent variable determines the value that needs to be calculated or the decision that needs to be made from the observations of the experiment. Hence, experimental design decision would most likely produce invalid and unreliable results when having more than one independent variable.
The garden plants and snails stay balanced as they are still being eaten. However, if the cat is removed, the birds will overpopulate and then the snail would be eaten and decrease faster which gives garden plants an increase in population due to the decrease in snails. Hope this helps!
