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Naya [18.7K]
3 years ago
13

Terence has studied the life cycle of frogs. He is curious and wants to find out what happens to a frog during the four seasons

of the year. He has found a pond with many frogs living in it in the summer. What should Terence do to find out what happens to the frogs for the rest of the year? Terence should ______.
keep visiting the pond throughout the rest of the year and record his observations


visit the pond after it has iced over in the winter and find the frogs


gather insects and feed the frogs all year long


count how many ponds there are in the area that have frogs and record his observations
Chemistry
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

do the first one to see what the frogs do in the winter(sleep) and other seasons(eat and mate)

Explanation:

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allsm [11]

Answer:

the expected decline in largemouth bass is 3,000 kg.

Option d) 3,000 kg is the correct answer.

Explanation:

Given the data in the question;

In 2016, there was 600,000 kg of zooplankton in the lake.

In 2017, an accidental runoff of insecticide near the lake caused a 50 percent decline of the zooplankton population in the lake.

Now,

The remaining mass of zooplankton  after the 50% decline will be;

⇒ 600,000 kg zooplankton  × 50%

⇒ 600,000 × 50/100

⇒ 300,000 kg of zooplankton

Now, with 10 percent trophic efficiency;  smaller fish directly feed on zooplankton; decline in smaller fish mass will be;

⇒ 300,000 kg × 10%

⇒ 300,000 × 10/100

⇒  30000 kg

Finally, with 10 percent trophic efficiency, largemouth bash directly feed on smaller fish, so the expected decline in mass of largemouth bash will be;

⇒ 30000 kg × 10%

⇒ 30000 kg × 10/100

⇒ 3,000 kg

Therefore, the expected decline in largemouth bass is 3,000 kg.

Option d) 3,000 kg is the correct answer.

7 0
3 years ago
How many formula units are present in 40.0 grams of Cu2S?
11Alexandr11 [23.1K]

Never mind, I did the problem wrong, I deeply apologize.

4 0
2 years ago
The pH at the equivalence point will be a. less than 7.00 b. equal to 7.00 Allohalineup of a sto quivalence point of a titration
True [87]

Answer: c. greater than 7.00

Explanation: The equivalence point of a titration is when all the base is consumed by the acid. When a strong base and a strong acid react, the medium is neutralized because is produced water and salt (which won't suffer hydrolysis). How water's pH is 7, in this type of titration the pH of the equivalence point will be at pH=7. But on titration of a weak acid with a strong base, the reaction of the equivalence point produces water and the conjugate base of the acid. Because the acid is weak, their conjugate base will be strong and will suffer hydrolysis, producing hydroxyl ions, elevating the pH of the water and making it greater than 7.

8 0
3 years ago
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Burka [1]

Answer:

A)  positive; added

Explanation:

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<em />

That means, the energy must be added being, thus, an exothermic reaction. The exothermic reactions have ΔH >0.

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