As a young field biologist, you are walking through a patch of grassland where you notice that there is a very common, well-established species of grass. further research shows that this grass is native to an area in another part of the world. this species of grass would be classified as a(n) species.

This species of grass would be classified as an INVASIVE species.

Explanation:

An invasive species is an animal or a plant that comes from another part of the world into another place where it is not originally from and it starts to grow or live there, invading the original or native species.

They are usually carried into other regions through ship ballast water and in most cases by people (through food from other countries or attached in clothes that were worn in another region)

The negative effect of these species is that can destroy the native species, cause extinction of the native species,harm the natural resources and affect how human use of these natural resources.

They are very competitive and can compete with the native species for limited resources hence they end up changing and disrupting the natural habitat of the native species. This affect the overall ecosystem and biodiversity.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !