100 POINTS
This image from the EPA shows the projected benefits and costs from the most recent amendments to the Clean Air Act. A net improvement in economic welfare is projected because cleaner air leads to better health and productivity for American workers. It also reduces medical expenses for air pollution-related health problems.

alternative pie chart showing comparison of benefits and costs of Clean Air Act Amendment programs

Based on your findings in parts A to C, write a summary paragraph evaluating the Clean Air Act in terms of cost and effectiveness. Cite evidence for your reasoning.

Answer:

In general, abiotic factors like rock, soil, and water interact with biotic factors in the form of providing nutrients. Just as humans mine mountains and cultivate soil, rock and soil provide resources for plants, and plants cycle the nutrients through so they (usually) end up back in the ground where they began.

Answer:

b

Explanation:

It is rectangular and it is outside

Answer:

The level of the water table can naturally change over time due to changes in weather cycles and precipitation patterns, streamflow and geologic changes, and even human-induced changes, such as the increase in impervious surfaces, such as roads and paved areas, on the landscape.

Answer:

b is yes

Explanation:

there are 3 chromosomes in 21 instead of just 2

Answer:

B. Yes

C. 21

D. Trisomy 21

E. Down Sydrome

Answer:

It converts RNA transcript into mRNA!

Explanation:

If you follow the steps of the Protein Synthesis, this will make sense (this is just a brief overview of it). So, you want to go from DNA --> RNA --> Protein. First, we start out with DNA that is inside the nucleus. From there, the DNA gets transcribed (transcription) into RNA (still in the nucleus). Next, the RNA gets spliced and synthesized into mRNA. mRNA gets exported from inside the nucleus to the outside of it through a nuclear pore and is now residing in the cytoplasm. Then, it gets translated (translation) into an amino acid chain. Finally, the a.a. chain will be synthesized into a protein.

Answer:

Aquatic systems are negatively affected by urban growth runoff. Here are few examples: Oil Spill, litter, Overfishing, Carbon Emission and Habitat destruction

la envoltura de gases que rodea la tierra u otro planeta. ¿Es esto lo que quieres decir?

Answer:

a. ATP           adenosine triphosphate

Explanation: correct/post protected.

Answer:

TRUE

Explanation: is correct

Answer:

Like gender and temperature, influence gene expression. Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

Answer:

Credit for developing cell theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. In 1839, Schwann and Schleiden suggested that cells were the basic unit of life.

Answer:

DNA-binding domain

homeodomain proteins, which are encoded by homeobox genes, are transcription factors.

Answer:

C

Explanation:

Answer:

Mirages happen when the ground is very hot and the air is cool. The hot ground warms a layer of air just above the ground. When the light moves through the cold air and into the layer of hot air it is refracted (bent). A layer of very warm air near the ground refracts the light from the sky nearly into a U-shaped bend.

The transverse tubules (t-tubules) with regards to the cardiac muscles are invaginations of the surface membrane of cardiac ventricular myocytes

With regards to skeletal muscles, are located in the space between the two Sarcoplasmic reticulum (SR) cisternae.

Learn more about t-tubules: https://brainly.com/question/6763078

Answer:

yes. the photo is correct

Explanation: post protected

Answer:

It would die ,without the needed skills and characteristics to live in a specific environment

Answer:

a. As an insertion point for I.V. lines

Explanation: is incredibly correct

sometimes I brush my teeth with peanut butter instead of toothpaste mmm

Answer:

Trait - A

Gene - E

Allele - B

Chromosome - C

Hope this helps!

Answer:

All plants and animals

Explanation:

Answer:

c

Explanation:

Answer:

B

Explanation:

Answer:

Before you begin to plan a scientific investigation you first a Perform background research to learn what is already known about the question you are trying to answer. You Create the data that will support your hypothesis.

Explanation:

Step 1: Record your observations.

These should be objective rather than subjective observations. In other words, the findings should be able to be independently verified by other scientists. Subjective observations based on personal views and opinions are not considered scientific. Here's an example of an objective statement: The temperature in this room is 58 degrees Fahrenheit. Here's an example of a subjective statement: This room has a pleasant temperature.

Making objective observations is the first stage in the Scientific Method. These assertions are based on specific events that have occurred and can be verified as true or incorrect by others.

Step 2: Come up with a hypothesis.

Our observations provide information about the past or present. We want to be able to forecast future events as scientists. As a result, we must rely on our reasoning abilities.

Scientists use historical data to establish a general principle or explanation that may be used to anticipate future events. A hypothesis is the term for the general principle. Inductive reasoning is the type of reasoning involved (deriving a generalization from specific details).

Step 3: Make an educated guess.

Step 2 resulted in a tentative hypothesis that may or may not be correct. How will we know whether our hypothesis is correct?

Our theory should be broad in scope and apply consistently over time and space. Scientists are rarely able to test every possible scenario in which a hypothesis could be valid. Consider the following hypothesis: A nucleus can be found in all plant cells. We can't test this idea by looking at every living plant and every plant that has ever lived. Instead, we use deductive reasoning to make a prediction. We can make the following prediction based on our hypothesis: Each cell in a blade of grass will contain a nucleus if I inspect it.

4. Carry out an experiment.

To gather information, we once again rely on our sensory sense. Based on our prediction, we devise an experiment.

The following is a possible scenario for our experiment: A total of 1000 patients aged 50 to 70 will be randomly allocated to one of two 500-person groups. The experimental group will receive Celebra four times daily, whereas the control group will receive a starch placebo four times daily. Patients will not be able to tell if their tablets are Celebra or placebo. The medications would be taken for two months by the patients. Medical exams will be performed at the end of the two-month period to see if the flexibility of the arms and fingers has changed.

Step 5. Analyze the results of the experiment.

The experiment produced the following results: 350 of the 500 people who took Celebra reported diminished arthritis as the end of the period. 65 of the 500 people who took the placebo reported improvement.

Step 6. Draw a conclusion.

From our analysis of the experiment, we have two possible outcomes: the results agree with the prediction or they disagree with the prediction. In our case, we can reject our prediction of no effect of Celebra. Because the prediction is wrong, we must also reject the hypothesis it was based on.

Step 7. Report your results.

Scientists publish their findings in scientific journals and books, in talks at national and international meetings and in seminars at colleges and universities. Disseminating results is an essential part of the scientific method. It allows other people to verify your results, develop new tests of your hypothesis or apply the knowledge you have gained to solve other problems.

I would choose the option D.

D. It remains tightly coiled at the G1 phase.

Answer:

Kepler's first law

Explanation:

Answer:

a. It is important to isolate the undigested plant material since the digested plant material cannot be used since the cell wall will be broken and the enzymes like DNases and other digestive enzymes will break down the organelle membranes and the DNA will be degraded.

If it is not isolated properly the other contaminants and the other enzymes, proteins and debris will interfere with the quality of the DNA. The isolation of undigested ensures that intact DNA can be isolated with the minimum amount of unwanted contaminants.

b. Metabarcoding is the technique through which several DNA/RNA samples are isolated and sequenced from a small or section of the sequence from a common sample to identify the different species present. This is done by isolation, amplification (PCR), and sequencing using a sequencer by comparing to the database. The database is formed by sequencing the known species in the area and then comparing the sequence data obtained from the sample to the database and when it matches the database sequence we can conclude that this species is present in the sample. Hence DNA from 400 plant species that grow on the African savanna and entry of the sequence data into a database was important.

Explanation:

Collecting DNA from 400 plant species on the African savanna and entering their sequence data into a database was crucial as an initial step to enable comprehensive genetic analysis.

An important first step was collecting DNA samples from 400 different plant species found on the African savanna and entering their genetic sequences into a database. This vast genomic database serves as a starting point for subsequent comparative study.

Researchers can use this information to identify the genes that are in charge of features essential for agricultural and pharmaceutical uses, such as disease tolerance, drought resistance, and medicinal qualities. This DNA database also advances our knowledge of the complex biodiversity of the savanna, aiding in conservation efforts and more comprehensive ecological research.

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The answer for this question would be letter A. Experimentation takes in by experimenting with your hypothesis, knowing what will happen and then gathering data from the outcome of the experiment. For your data, you create your analysis of what had happened then conclude.

Answer:

C. 24

Explanation: I had that question on a test before.