Me !

14 !

will mark

( no options for first image)

second image

blank 1:

a) renewable
b) nonrenewable
c) polluting

blank 2:

a) it will destroy ecosystems
b) it requires fossil fuels
c) it won't be useful for irrigation

image 3 !

blank 1:

a) tagging
b) point counts
c) area searches

blank 2.
a) decrease the number of trees in their habitat
b)fragment the forests where they live
c)designate their area as a national park

Image 1 -

So, if there is a 5% increase every year, it means that in 3 there will be a increase of:

500 in the first year - 10 000 * 5 / 100

525 in the second year - 10 500 * 5 / 100

551.5 in the third year - 11 025 * 5 / 100

Now we add that all up:

11 576.5

11 576.5

Image 2 -

It's renewable because it depends on something as simple as water flow.

I think building dams has many advantages, but many ecological disadvantages. It interferes in flooding which cause a lot of damage and it can also affect some species migration such as fish.

Answers:

A. and A.

Image 3 -

The most common and efficient way of doing this monitoring, especially with endangered species is probably tagging. Point count, as far as I know, is only used for bird monitoring and area searches are not effective at all.

When you designate an area as a nation park, it acquires certain protection laws (I think it works like so in all countries) that protect the species in it. Decreasing the number of trees does not make any sense and fragmenting the forests can only make things worse.

Answers:

A. and C.

Hope it helped,

BioTeacher101

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.