All the different species living in the world make up biological diversity. genetic diversity. a population. a habitat.

The correct answer would be biological diversity

Biological diversity or biodiversity refers to the sum up of all the variety of life living on the planet earth.

It measures variation at three levels; ecosystem, species, and genetic levels.

Genetic variation refers to all the variation present at the genetic or genes level.

Species variation refers to the variety of species present in an area.

Ecosystem variation refers to the different types of habitats, biological communities, ecological processes et cetera.

i'd say that the moon rock is about 2.2 billion years old.

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.