Author Question: What allocates resources? a. The economic system of supply and demand b. The amount of easily ... (Read 28 times)

luvbio · **on:** Aug 22, 2018

What allocates resources?
a. The economic system of supply and demand
b. The amount of easily accessible resources
c. The impact of mining operations on an ecosystem
d. The government of the United States

Question 2

What are some of the adaptations exhibited by organisms living in estuaries? How do pelagic species
use estuaries to their advantage? What will be an ideal response?

huda · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: A
There needs to be a balance of production, distribution, and consumption of goods. Marine ecosystems
have various people and governments dictating which goods to produce, how to produce them, and
how to distribute these goods to the consumers. Information can be found in the section Marine
Resources Are Subject to the Economic Laws of Supply and Demand.

Answer to Question 2

ANS:Answer
should include:
Organisms that reside in the estuary must be able to adapt to their rich yet variable
environment.
Some estuarine plants are able to reduce the amount of erosion near them by changing
the flow of currents. They are able to trap silt particles and sediment at the base of their
roots. This makes their position more stable.
The plants of the estuary have variations in the root systems. Small plants are prone to
having tiny projections that anchor them to the substrate while larger plants exhibit
elaborate root systems.
Most residents of the estuary burrow into the muddy substrate. This behavior gives them
access to a high level of nutrients while providing shelter.
Pelagic species use the estuary as marine nurseries. Many fish lay their eggs in the
estuary because they gain protection from the oceanic predators. Also, the larvae are
able to take advantage of the high nutrients during vital growth stages of their life.