A place where fresh water and salt water meet?

Answer 1

The global market value for the provision of food,

timber, marine fisheries, and hunting and fishing is

estimated at more than one trillion dollars per year.

However, these ecosystem values are not adequately

reflected in markets and polices, as evidenced by

the fact that more than 60 percent of our planet's

ecosystem services have already been degraded or

are being used unsustainably.

Freshwater systems provide essential ecosystem

services, both for human populations and as home

to the greatest concentration of biodiversity on Earth.

However, the world's freshwater systems and their

myriad species are losing their value for people due to

depletion of water supplies, pollution of what remains,

unsustainable harvest of species, the introduction of

alien species, and changing climate.

Conservation International is addressing the threats

to ecosystem services, particularly in fresh water, for

the benefit of humans and biodiversity alike through

its Ecosystem Services and Freshwater Initiative.

Launched in 2007, this initiative includes science,

practice, and leveraging policy and behavior changes.

The results CI is generating are critical for making a

business case for biodiversity and ecosystem services

conservation as a means of generating human welfare

benefits within larger contexts of human development,

poverty alleviation, and land-use decisionmaking.

These results can only be achieved through strong

partnerships with research institutions, national and

international nongovernmental organizations (including

development and humanitarian organizations),

governments, corporations, and local organizations

among others; such partnerships are a cornerstone of

CI's overall conservation strategy.

Answer 2

many places ...

but if you want A place I will say Baltic sea, which is the biggest brackish area of the world !

Answer 3

An estuarine ecosystem.

Answer 4

in sea