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lisabon 2012 [21]
3 years ago
13

In activity c, you explored how temperature affects the concentration of dissolved oxygen in a pond use the three data points yo

u collected for the cold Pond to determine the mean dissolved oxygen of the cold pond
Biology
1 answer:
igor_vitrenko [27]3 years ago
4 0

Answer:

Add the three data and divided by 3.

Explanation:

Temperature has a great affects on the concentration of dissolved oxygen in a pond because temperature is responsible for the presence of high amount of dissolved oxygen in water. At low temperature such as in winter season, the amount of dissolved oxygen in water is higher while in warm temperature such as in summer season, the concentration of dissolved oxygen is lower. So   for measuring the mean dissolved oxygen of the cold pond, you have to add the data and then divided by 3, you will get the average dissolved oxygen of the cold pond.

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A chemical reaction is shown.
mixas84 [53]

Answer:

1) A chemical reaction is shown.

SnO2 + H2 → Sn + H2O

What is true about this chemical reaction?

B.

It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).

2) Read the information about an experiment.  

Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.

Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?

A.

The steel wool should be burned inside of a sealed jar or other closed system.

Explanation:

The explanation to number 1 is that I selected it in my test and got it.

The explanation the number 2 is from the link below:

https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020

8 0
3 years ago
What are the conditions necessary for a population to be at a Hardy-Weinberg equilibrium (or evolutionary equilibrium)?
Firdavs [7]
Five conditions are required which are 1)there must be random mating,2)the population must be very large,3)there cannot be no movement into our out of the population, 4)no mutations,5)no natural selection.
7 0
3 years ago
vines and trees are both plants but, they are very different from each other. what adaptations can you see in these plants, and
atroni [7]
<span>trees have well-developed roots and leaves.
vines can crawl in walls and other trees that catches better sunlight and rainwater. 

Adaptations are the result of evolution in different living organisms. This process occurs amazingly through gene mutation but it takes a very long period in time. Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. </span>
5 0
3 years ago
Question 3 (4 points)
vlabodo [156]

Explanation:

Evaporation-A phase change from a liquid to a gas

Melting-A phase change from a solid to a liquid

Freezing-A phase change from a liquid to a solid

Sublimation-A phase change from a solid to a gas

Hope this helped, lots of love,

-Kiddoo <3

8 0
3 years ago
Read 2 more answers
In lecture we discussed the features of living organisms that most scientists would agree are reasonable. Viruses have some, but
dimaraw [331]

Answer:

Viruses are composed of one or more cells.

Explanation:

The viruses are microorganisms composed of genetic material protected by a protein envelope, and that´s how they work and live.  This protein membrane, (only present in some viruses), is carbon based.

By they way of fuction, they evolved along whit the cell in wich they are introduced, since they reproduce with it.

8 0
3 years ago
Read 2 more answers
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