ANSWER:
The effects of increasing or decreasing the nutrient levels in an aquatic food webs is described in the explanation.
Explanation:
If the nutrient levels in an aquatic food web increase moderately then it will result in increased production of the primary producers and the consumers.
But if the nutrient levels are increased excessively, like in eutrophication, then the increased level of nutrients will result in overproduction of the consumers like fishes, etc. Hence, there will be a scarcity of resources like oxygen in the water to support them and this will lead to a decline in biodiversity of the aquatic food web.
If the nutrient levels are decreased, then there will be competition for resources among the species which will ultimately lead to the decline of some species from the aquatic food web.
<em>Answer: Introducing a species into a new environment may have a variety of outcomes. ... However, when these alien species begin to have negative consequences in the new habitat, they are called invasive species. Invasive species may cause environmental harm, economic harm, or impact human health.</em>
<u>Answer:</u>
Australia has invested in capital goods, so their standard of living and GDP increasing is true.
<u>Explanation:</u>
- Capital goods are goods or objects that is used to produce other good or objects. Examples are buildings, furniture etc.,
- GDP measures the economic activity of the country.
- Investing in these goods has led to the "average household net-adjusted disposable income per capita as USD 32,759 a year", this increased the standard of living and resulted Australia as 'one of the highest' in the world.
According to the American Pregnancy Asociation, pregnant woman shall eat 75 to 100 grams of protein per day.
Hope it helps!
