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vivado [14]
3 years ago
11

Human population growth is currently most rapid in

Biology
1 answer:
kirill115 [55]3 years ago
3 0
It is more rapid in the earth I’m just kidding it’s more rapid in the Middle ages
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What are the roles of the structures L and I in Figure 33-5?
-BARSIC- [3]
Structure L and I are the superior and inferior vena cava. They bring de-oxygenated blood from the body into the right atria.
5 0
3 years ago
Plz help!!!!<br> Kinda in a hurry to catch up on biology rn anything can help!!!
luda_lava [24]

Answer:

16. Control group: Subject A

17. Independent (manipulated) variable: Type of powder

18. Dependent variable: Itching time

19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.

Explanation:

  • Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.  

The experimental group is the one that receives the experimental procedure, with changes in the independent variable.  There can be several experimental groups. In this case, the experimental group is subject B.

  • Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable.  
  • Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used.
  • The data <u>does support</u> the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).
4 0
2 years ago
How are rhizomes involved in asexual reproduction of ferns?
Rasek [7]

Answer:

The sporophytes of ferns grow through the rhizome

Explanation:

The gametophyte are responsible for sexual reproduction in plants while the sporophytes are usually responsible for asexual reproduction in plants.

Sporophytes are found in the rhizomes of plants and they help in the asexual reproduction.

This is how rhizomes are involved in asexual reproduction of ferns

7 0
3 years ago
What was chargaffs observation about the nitrogen bases in dna
zubka84 [21]
DNA contains equal amounts of adenine/thymine and guanine/cytosine.
5 0
3 years ago
Viviparous type of seed germination is found in
PtichkaEL [24]

Answer:

(4) Both (1) & (2)​

Explanation:

Viviparous germination is a type of seed germination in which seeds germinates but still attached with the plant body. This type of germination is present in plants such as Sonneratia and Rhizophora. In these plants, the embryo which is present inside the seed grows and break the seed coat and after that, it comes out the fruit which is still attached to the plant.

4 0
3 years ago
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