1. What lines of reasoning support the hypothesis that the first self-replicating systems were based on RNA molecules?
2. Why is the origin of cyanobacteria a critical step in evolution?
3. What evidence supports the idea that mitochondria and chloroplasts were once free-living members of the domain bacteria?

4. What evidence supports the classification of life into three domains?

5. Compare and contrast the physical and chemical conditions on Earth at the time life first arose with conditions today.
   a) Discuss two reasons why animals could not have existed on early Earth.
   b) In what ways has microbial metabolism altered Earth’s biosphere?
   c) How might life on Earth be different if oxygenic photosynthesis had not evolved?

What is the racial wealth gap? What are the major factors driving the growing racial wealth gap? How are these representative of larger patterns in society? Finally, what specific factors contribute to these grave disparities?

Spiders have what kind of circulation?

A. Closed circulation with blood vessels

B. Intermediate circulation with some vessels and some areas where the fluid moves directly around tissues

C. Open circulation with fluid bathing all organs and tissues

D. None of the above

National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the opinions of all adults in the nation. Explain who is in the sample and who is in the population for such polls. Please use a poll from a newspaper, TV, a magazine, or from the Internet (Chapter 8).

You may use the information in the textbook or cite a source.

Then answer your classmates' posts and comment on their description.

Please remember to use APA formatting if you use help from the textbook or a website. Try to use your own words!

Explain the importance of understanding intercultural communication. Identify the role that context plays in communication, and include references to high-context and low-context cultures. Must be at least 250 words.

Background For this exercise, you will write an Appointment class that tracks information about an appointment such as the start and end times and a name for the appointment. Your Appointment class will also have an overlaps() method that takes another Appointment object as an argument and determines whether the two appointments overlap in python.

Instructions

Write a class called Appointment with methods as described below:

__init__() method Define an __init__() method with four parameters: self name, a string indicating the name of the appointment (for example, "Sales brunch"). start, a tuple consisting of two integers representing the start time of the appointment. The first integer represents an hour in 24-hour time; the second integer represents a number of minutes. For example, the tuple (10, 30) would represent 10:30 am. end, a tuple similar to start representing the end time of the appointment. The __init__() method should create attributes name, start, and end, and use them to store the information from the parameters.

overlaps() method Define an overlaps() method with two parameters, self and other, where other is another Appointment object. This method should return True if self and other overlap and False if they do not. Be sure to return a boolean value rather than a string. Note that two appointments overlap if the start time of one appointment occurs between the start and end times of the other appointment (including if the start times are equal), OR the end time of one appointment occurs between the start and end times of the other appointment (including if the end times are equal) For this assignment, if the start time of one appointment is equal to the end time of the other appointment, the two appointments are not considered to overlap. Hints Assuming you have two values a and c such that a is less than c, you can determine if a third value b is between a (inclusive) and c (exclusive) with an expression like this: a <= b < c When Python compares two sequences (such as tuples), it compares each item in the first sequence to the corresponding item in the second sequence until it finds a difference. For example, given the expression (10, 4, 12) < (10, 5, 1), Python first compares 10 to 10. Because they are the same, Python then compares 4 to 5. Because 4 is smaller than 5, Python stops comparing and the expression evaluates to True: (10, 4, 12) is considered less than (10, 5, 1) in Python. A boolean expression such as a <= b < c evaluates to True or False. You don’t need to put it inside a conditional statement to return a boolean value. In other words, instead of this: if a <= b < c: return True else: return False you can do this: return a <= b < c

Docstrings Write a docstring for your class that documents the purpose of the class as well as the purpose and expected data type of each attribute. For each of the methods you wrote, write a docstring that documents the purpose of the method as well as the purpose and expected data type of each parameter other than self (you never need to document self in a docstring). If your document returns a value, document that. If your document has side effects, such as modifying attributes or writing to standard output, document those as well. Be sure your docstrings are the first statement in the class or method they document. Improperly positioned docstrings are not recognized as docstrings by Python.

Using your class You can use your class by importing your module into another script. Below is an example of such a script; it assumes the Appointment class is defined in a script called appointment.py which is located in the same directory as this script. use_appointment.py from appointment import Appointment def main(): """ Demonstrate use of the Appointment class. """ appt1 = Appointment("Physics meeting", (9, 30), (10, 45)) appt2 = Appointment("Brunch", (10, 30), (11, 00)) appt3 = Appointment("English study session", (13, 00), (14, 00)) if appt1.overlaps(appt2): print(f"{appt1.name} overlaps with {appt2.name}") else: print(f"{appt1.name} does not overlap with {appt2.name}") if appt1.overlaps(appt3): print(f"{appt1.name} overlaps with {appt3.name}") else: print(f"{appt1.name} does not overlap with {appt3.name}") assert appt1.overlaps(appt2) assert appt2.overlaps(appt1) assert not appt1.overlaps(appt3) assert not appt3.overlaps(appt1) assert not appt2.overlaps(appt3) assert not appt3.overlaps(appt2) if __name__ == "__main__": main()

. Suppose that the lifetime of a charged electronic device is uniformly distributed in the interval [5, 6] hours. Suppose you take 20 measurements. Compute the following • The probability that the mean over the 10 measurements exceeds 5.6 hours. • The probability that the mean lies between 5.45, and 5.55 hours. • The probability that the mean exceeds 6.1 hours. Think about this last point carefully: Do it first by applying the central limit theorem, but then explain whether this answer makes sense or not.

Describe possible psychosocial stressors inherent in working with clients in mental health and wellness settings. What types of community resources would you recommend in these situations? How would you incorporate community resources into treatment? Please cite the answer

Discuss the negativity in the lyrics of 90s grunge and industrial rock music such as "Smells Like Teen Spirit" and "Terrible Lie". Why do you think this genre was so popular in a time of relative peace and great prosperity in the United States?

As you read about the actions and reactions of young people cited from intergenerational research, with which strategies and responses do you identify? Which do you believe are uncharacteristic of you?

Textbook: The developing person through the life span 10th edition, Berger,Kathleen. The peer group is a part of the social development of middle childhood children. These groups are 1) culture of children, 2) friendship, 3) popular and unpopular children and 4) bullies and victims. Summarize your thoughts on bullies and victims and their effects on children. What are your thoughts on this group?

Consider 2 alleles in a population of seahorses: A and a. There are 2 sea horses with genotype AA, 96 seahorses with genotype Aa and 2 seahorses with genotype aa. What are the frequencies of the alleles in this population. Please show all work. Is this population in the Hardy Weinberg Equilibrium? Explain why or why not. THANKS IN ADVANCE!! :)

Evaluate various approaches organisations use to monetise digital data.

• Discuss what is meant by data value.
• Argue how companies should formalise data valuation practices.
• Investigate how a company could embed data valuation into company-wide strategies.