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Bingel [31]
3 years ago
5

In a study published in the journal Nature, scientists studied eight ponds in Florida: four that were populated by a species of

fish and four that were not. As they studied the ponds, they noted that the areas around the four fish-populated ponds showed decreased populations of dragonflies and dragonfly larvae, whereas the four without fish showed abnormally large populations of dragonflies and larvae. Dragonflies feed on bees, butterflies, and other pollinators.
Predict what would happen to the rate of pollination of flowers in a field next to a pond with no fish. Use evidence to support this prediction. Identify the keystone species in this scenario and explain how you have inferred this.
Biology
1 answer:
Reika [66]3 years ago
7 0

Answer:

Explanation:

The rate of pollination in the field (near the pond with no fish) will decrease exponentially. Because, as the fish population is removed from that ecosystem, the population of dragonflies and larva increases without check because, fish feeds on the dragonflies larva and kept there population in check. Due to this, the population of bees and other pollinators population decline becuase, they are major food source of dragonflies.

Honeybees are the keystone species because it's absence will lead to major changes in the ecosystem.

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What will most likely happen to the population of bison that feed on the grass
Mandarinka [93]
If a portion of the grass was destroyed by wildfire, then the population of bison that feed on the grass will decrease. This is because there would be very little grass left for them to eat, and they don't eat anything else.
6 0
3 years ago
Stroke volume is the amount of blood that leaves the left ventricle of the heart with each contraction. If a person has a stroke
makvit [3.9K]

Explanation:

The amount of blood that leaves the left ventricle of the heart with each contraction is called Stroke volume.

A person has a stroke volume of 80 ml/beat. It means that it is 80 milliliters per beat.

We need to find how many liters would that be.

We know that, 1 litre = 1000 milliliters

1 mL = 0.001 L

To convert 80 mL to litres, we can do it as follows :

80 mL = (80 × 0.001) LL

= 0.08 L

Hence, he stroke volume of a person is 0.08 L/beat.

8 0
3 years ago
What is the relationship between light intensity and gas production?
balandron [24]

Answer:

As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.

6 0
3 years ago
a person take concentrated solution of salt after sometime he start vomiting what is the phenomen responsible for such solution
photoshop1234 [79]

Answer:

because the solute concentration is higher outside than inside, water exits through endoctocys

Explanation:

8 0
3 years ago
Determine whether the following actions are harmful to the environment or help to conserve the environment.
Temka [501]

Coach Luke encourages his football team to wear biodegradable sneakers. The sneakers can be buried in the ground when they are worn out, and after many years, they will decompose like a plant. This condition conserves the environment.  

<h3>What do you mean by Environment?</h3>

An environment may be defined as anything which is present in the surroundings of living entities that is either biotic or abiotic factor.

Chef Sonia uses disposable, nonbiodegradable kitchen towels in her kitchen. She uses them for everything from cleaning up spills to wiping her hands. She ends up using about two rolls in a month. This condition harms the environment because the towels are nonbiodegradable in nature.

The last situation conserves the environment because it utilized solar panels for energy production which is efficient in cost as well as helpful for the environment.

Therefore, each situation is mentioned above.

To learn more about Environment, refer to the link:

brainly.com/question/17413226

#SPJ1

5 0
2 years ago
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