<span>Damming a river has a variety of effects on the freshwater ecosystem, more than just altering the flow from A to B. Dams create calm bodies of water, changing overall temperature regimes and sediment transport, leading to conditions which tend to favour generalist species. Loss of specialist species, particularly endemics, changes the community structure and leads to biotic homogenization. A dam will withhold sediment in the reservoir, not just decreasing the amount of substrate available to local freshwater species, but even impacting diadromous, estuarine and marine species much further downstream. The competition between resident species for food and breeding sites will increase as damming isolates populations, and perhaps more importantly, damming completely restricts migratory fish species. Isolation may lead to decreases in genetic diversity and therefore puts species at greater risk from disease. All of these effects may be exacerbated by changes in the surrounding land use. Overall, damming river flow will lead to both a loss of native species, but also an increase in exotic species which are more likely to become established in degraded habitats. For this reason, dams are one of the greatest global threats to freshwater biodiversity.</span>
In the simulation, the prey type that will avoid capture the most is the beans while the predator that will succeed in capturing the most prey is the spoon.
<h3>What are predator-prey relationships?</h3>
Predator-prey relationships are feeding relationships in which one organism kills and eats another organism for food.
The organism that kills the other is called the predator while the organism that is killed is called the prey.
In the simulation, the prey type that will avoid capture the most is the beans since it had the smallest surface area and size.
The predator that will succeed in capturing the most prey is the spoon because of its hollow nature.
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Answer:
Producers
Explanation:
they get their energy directly from sunlight and inorganic nutrients.
In a scientific experiment, a VARIABLE changed is any factor that can change or be
Answer:
C) both an aggregate fruit and an accessory fruit
Explanation:
When several flower ovaries or receptacle of a flower with many separate carpels joins together they form aggregate fruit. Each ovary has a single ovule that converts into a seed after fertilization.
Aggregate fruit can be formed without the involvement of accessory parts called true aggregate fruit or with the involvement of additional floral parts called accessory aggregate fruit. Strawberry is also an accessory aggregate fruit because the different ovaries in the strawberry develops into achenes over the surface of flower receptacles.
