An ecosystem dominated by lichens, mosses, grasses, and woody plants. it is generally found at high latitudes. it is described as having a marshy surface where mosses, lichens, berries and low shrubs grow with mucky soil and permafrost underneath. what is this ?

Tundra

Explanation:

Tundra is a type of biome characterized by low temperature and short growth season and generally found at high latitudes. The soil is solid, frozen and known as permafrost. It forms when the temperature is below -5° celsius. Tree roots are not able to penetrate this frozen soil so only shrubs, grasses, moss and lichens can grow here. Hence, tundra climate is hostile to woody vegetation. In summers when the top layer of permafrost melts, it leaves behind marshy and soggy grounds and bogs. There are three types of tundra: arctic, antarctic and alpine.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.