Answer: B. Invasive species
An invasive species is a species of organisms which is introduced to a new ecosystem and increases in number rapidly. An invasive species complete with the native species for resources and the population of native species being weaker decreases in number, migrate to other locations or extinct. Here, foreign plants can be considered as invasive species because it limited the growth of native species and these foreign plants were only plants left after several growing seasons.
Answer;
D. The Open Marine ecosystem
Explanation;
An ecosystem
is the lowest level of environmental complexity that includes living (biotic factors)and nonliving factors (abiotic factors).
-The Open marine ecosystem contains the fewest photosynthetic producers, this is because most producers can't live or survive in an areas with the lack of nutrients or sun light. They need nutrients for growth and also sunlight to undertake the process of photosynthesis which helps them make their own food.
Answer:
Fruits, vegetables, spices, cereals, Wood, Fibres, Cotton, perfumes, dyes, and most importantly medicines.
Explanation:
Plants play a major role in the preparation of several useful drugs and antibiotics.
Answer:
You have the exact same types of chemicals in your body as when you were younger.
Explanation:
