9. Why is it not reasonable to think that all variables can be controlled?
I

Answers

Answer 1

Answer:

Any given experiment has numerous control variables, and it's important for a scientist to try to hold all variables constant except for the independent variable. If a control variable changes during an experiment, it may invalidate the correlation between the dependent and independent variables.

Explanation:


Related Questions

Choose THREE examples that correctly predict the effect of a change on the ecosystem.
А
A decrease in the kangaroo rat population will cause a decrease in the coyote
population
B
A decrease in the desert tortoise population will cause a decrease in the
rattlesnake population
Wc
A decrease in the rattlesnake population will cause an increase in the kangaroo

Answers

Answer:

The answer is option A "A decrease in the kangaroo rat population will cause a decrease in the coyote population"

Explanation:

Climate is a significant ecological impact on environments. Changing Climate influences biological systems in an variety of ways. For example, warming may constrain species to relocate to higher scopes or higher rises where temperatures are more helpful for their endurance.

Environmental change not just influences biological systems and species straightforwardly, it likewise communicates with other human stressors, for example, advancement. Although a few stressors cause just minor effects when acting alone, their combined effect may prompt emotional natural changes. For example, environmental change may worsen the pressure that land improvement puts on delicate water front zones. Also, as of late logged forested zones may get defenseless against disintegration if environmental change prompts increments in substantial down pour storms.

Where are many critical biodiversity hotspots located?

Answers

Answer:

Tropical forests are typically biodiversity hotspots and are usually filled with endemic species. The Upper Amazonia/Guyana Shield, the Congo Basin, and the New Guinea/Melanesian Islands have the highest number of endemic terrestrial (land-living) species on Earth

Explanation:

hope this helped:)

What are the properties of water that you can observe when transpiration takes place?

Answers

Answer:

When water evaporates through the leaves, a pull is created through the xylem, and water moves back to the leaves. This is known as the transpiration pull.

Which of the following pair of codons both code for serine?







a
ACA and AUC
b
UCG and GCU
c
GCC and UGG
d
AGC and UCC

Answers

Answer: The answer would be D.

Explanation: I took the test and i got D. Sorry if that’s wrong

in chemical reactions, bonds blank in reactants.

Answers

in chemical reactions, bonds break in reactants

Please help!! And thank you!!

Answers

Well, understand it :-

The temperature rises as you get higher in the stratosphere and in the thermosphere.Temperatures decrease as you gain height in the troposphere and the mesosphere.

How do bones grow (explain the process)?

Answers

Answer:

Bones grow in length at the epiphyseal plate by a process that is similar to endochondral ossification. The cartilage in the region of the epiphyseal plate next to the epiphysis continues to grow by mitosis. The chondrocytes, in the region next to the diaphysis, age, and degenerate.

HELP PLEASE
need to find the average for the values

Answers

Answer:

Average for zero: 51.1

Average for two: 76.3

Average for four: 87.4

Average for six: 103.3

Blank 1: 51.1

Blank 2: 76.3

Blank 3: 87.4

Blank 4: 103.3

Explanation:

The above answers gave the average of each of the set of numbers.

To calculate the average of a set of numbers, It is done by simply summing the numbers and then dividing the numbers by the total number of values in that set of numbers.

From the data given, zero, two, four and six all have their set of numbers. So, with those values, the average was calculated.

What kind of features would you expect to find in a transitional
fossil between Ichthyostega and Eusthenopteron?

Answers

Answer:

hope that help you

Explanation:

Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants are referred to as transitional forms. There are numerous examples of transitional forms in the fossil record, providing an abundance of evidence for change over time.

what are the steps in the digestion of protein​

Answers

answer - Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains

Explanation:

Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.

hope it helps!

Which of the following is true of the water at the bottom of the ocean?
It contains the most salt.
It is particularly rich in nutrients.
It will be the warmest water in the region.
There are very few organisms that can survive there.

Answers

Answer: it is particularly rich in nutrients

Explanation:

What have researchers found a correlation between with respect to black holes? HELP PLEASE QUICK

Answers

Answer: It’s A I think

Explanation:

I have no idea. Its Not D, im pretty sure. And I dont think it’s B. So it’s either A or C, and I think it’s A.

Answer: A

Explanation: just took the quiz and got it right

PLEASEEE HELPPPPP!!!!!!!
which aquatic ecosystem is the most commercially exploited for seafood and minerals.

Answers

Answer:

The coral reefs of the Caribbean are thought to be under threat

Explanation:

Overfishing threatens over 60 percent of Caribbean coral reefs. Declines in coral cover and increases in algal cover have been observed across the region. This analysis identified about one-third of Caribbean reefs at high threat from overfishing pressure and about 30 percent at medium threat.

What is the coriollis effect

Answers

Answer:

The Coriolis effect is defined as how a moving object seems to veer toward the right in the Northern hemisphere and left in the Southern hemisphere.

Explanation:

Please give brainliest!

Megalodon left an awful lot of teeth behind, but don't worry. It is likely that it had plenty of extras. Like modern sharks, Megalodon had several rows of teeth. Scientists believe that Megalodon had six rows of 7-inch-wide, razor-sharp teeth, top and bottom, for a total of 276 teeth in its giant jaws! It's no wonder, then, that this ancient shark left so many of them behind. Without this trail of teeth, we would not know that these enormous creatures swam the ancient oceans as a top predator.Select two sentences from below that best show that the author wants the reader to be able to relate Megalodon's size to everyday life




A.What would you expect a creature whose name means “big tooth” to look like?
B.The Megalodon shark deserves this title.
C.As the Greek roots mega- (“big”) and don (“tooth”) suggest, this awesome prehistoric creature certainly did have huge teeth—as well as a massive and powerful body.
D.Scientists estimate that these gigantic sharks stretched as long as 60 feet.
E.If you're having trouble imagining that, just think of a school bus, typically about 45 feet in length.
F.Now, imagine a shark just a bit larger than that school bus—with 7-inch teeth.
G.Yes, this ancient fish certainly earned the prefix mega!
H.Since these sharks are extinct, how do we know exactly how huge and powerful the Megalodon shark was?

Answers

The answer is D and F. I did the test

Discuss the roles of the enzymes secreted by the pancreas during digestion.

Answers

During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.

Antimycin A Antimycin A is used in catfish farming: added to the water at 10 ppb, it kills small fish but does not harm catfish. Thus, small fish die out, and catfish get all the resources. When Antimycin A is added to isolated mitochondria, NADH and succinate both accumulate. However, if ascorbate, an artificial redox mediator that transfers electrons to cytochrome c, is added, oxygen consumption is still observed. Which step in the respiratory chain is antimycin A likely to inhibit (1 pt)

Answers

Answer:

Inhibits electron transport chain in mitochondria.

Explanation:

Antimycin A inhibits electron transport chain which leads to the complete halt of electron transport in mitochondria. due to this inhibition of electron transport chain in mitochondria leads to the killing of the fishes except catfish and so the catfish increase in population due to more resources and no competition. this Antimycin A is highly toxic for fishes and kill all fishes if used at the amount of 10 ppb.

Science is an attempt to explain
A. the truth concerning all things in Science
B. the supernatural
C. superstitions
D. natural phenomena

Answers

A. The truth concerning all things in science

Answer:

its D i took the k12 test i hope this helps

Explanation:

please give an perfect answer​

Answers

Answer:

a neutral solution? i think

Which layer affects the oceanic and continental plates here on Earth?

Answers

Answer:

lithosphere

Explanation:

Choose the mutation that you think is causing Lucy’s ADA enzyme not to work. Form a hypothesis and explain your answer. You can revise your hypothesis as you perform more experiments.

Answers

answer

stop condon mutation

Explanation:

The mutation is defined as the alteration or change in the genetic sequence of the chromosome. The mutations in the ADA genes have been noted and are caused by point mutations.

Point mutations are defined as the mutations in which the alteration of the single nucleotide of DNA occurs.

Stop codon mutations are the type of point mutations, in which the nonsense codons signal the end of protein synthesis.

Adenosine deaminase is involved in purine metabolism. It is involved in the development of the immune system.

Lucy's condition is due to the stop codon mutations in the genetic sequence of the DNA. The stop codon mutation will signal the end of the translation process, which will result in the non-functionality of the ADA enzyme.

Therefore, the stop codon mutation in the ADA enzyme will occur in Lucy's genetic sequence.

To know more about the ADA enzyme, refer to the following link:

https://brainly.com/question/19896249

PLEASE HELP ME WITH 10 and 11!! :(

Answers

Answer:

Please find the answers to numbers 10 and 11 of the attached image below.

Explanation:

10. This question lists the stages of mitosis namely: prophase, metaphase, anaphase, and telophase. The major events that take place in each of these stages are as follows:

A) PROPHASE:

- the supercoiled chromosomes known as chromatin begins to condense making it visible.

- spindle begins to emerge from the centrosome organelle.

- Nuclear envelope begins to break down in order to expose the chromosomes in the nucleus.

B) METAPHASE:

- The chromosome are aligned at the cell plate i.e. the equator/middle of the cell.

C) ANAPHASE:

- The sister chromatids of each chromosome i.e. replicated chromosomes are pulled apart at the centromere by spindle microtubules to the opposite poles of the cell.

D) TELOPHASE:

- Chromosomes at opposite poles begin to decondense into chromatin.

- The nuclear envelope reforms around the chromosomes

11) Cytokinesis is the process that occurs after mitosis (nuclear division). It is the process whereby the cell whose chromosomes are now separated into opposite poles divide into two. In other words, a cell divides into two in the cytokinesis stage.

how do organelles interact in the production and use of hemoglobin found in theses cells

Answers

Answer:

B

Explanation:

Answer:B

Explanation:

why is energy flow through an ecosystem dependent upon continual energy transformations?​

Answers

Answer:

Organisms must gather energy to survive.

Explanation:

Answer:

food

Explanation:

What created the solar system? *
The Big Bang
A dust cloud
O O O O
O Nebula
A shooting star

Answers

Answer: dust cloud

Explanation:

dust condensed after asteroid collisions at the kepler belt  

plz help for brainlyist​

Answers

Answer:

1,3

2, organs

3, i do not know

4, i do not know

What are the Complementary DNA base pairs: ATTGGCCTAGC *

Answers

Answer:

taaccggatcg

Explanation:

many united states weather maps throughout the year will look similar to the one above. which explanation best describes the cause of this phenomenon?

Answers

Answer:

d

Explanation:

because it is?

e a sports
is in the trash

Answers

Answer:

K

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Answer:

and now you're trash

Explanation:

Describe what are the roles of producers, Consumers, and decomposers in an ecosystem?

Answers

Answer:

"How might different types of organisms--producers, consumers, decomposers--be important to a healthy ecosystem?" (Producers change energy into matter with chemical energy that other organisms can use and then consumers pass the matter and energy on to other organisms by eating and being eaten; decomposers recycle some ...

Explanation:

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