Describe and give an example of four (4) other factors besides natural selection that could lead to evolution (changes in allele frequency at the population level).

In a process to make jelly, the macerated fruit, which has 14% by weight of soluble solids, is mixed with sugar (1.22 Kg Sugar / 1.00 Kg fruit) and pectin (0.0025 Kg pectin / 1.00 kg fruit). Consider sugar and pectin as soluble solids. The resulting mixture is passed to an evaporator to produce a jelly with 67% by weight of soluble solid. Calculate, for a feed of 1000 Kg / h of macerated fruit, the Kg / h of mixture obtained, the Kg / h of evaporated water and the Kg / h of jelly produced.

Earth's climate system includes not only the Sun but also: land surfaces and albedo, water in its three phases, oceans covering much of the planet, and the atmosphere. Explain how each is involved in the climate system.

5. How do we know that the fossil fuel burning was done by humans?

6. Besides greenhouse gases, list three other factors that could conceivably account for a warming atmosphere.

Why is it relevant to explore the question of whether Africans came to the western hemisphere before Columbus?

Compute the ideal work required for the mixing of pure oxygen and pure nitrogen to produce air (21 mol % oxygen and 79 mol % nitrogen) at 25 °C and 1 bar in a steady-flow process if T _surrounding= 500 K. Assume that this process is an isentropic process and pure oxygen, nitrogen, and the air is an ideal gas. (8 points)

The sun can be treated as a blackbody at temperature 5800 K, and solar radiation between the wavelengths 0.35 and 0.70 μm is useful for photosynthesis. (a)What is the wavelength λ1 below which 20% of the solar emission is concentrated? (b) What is the wavelength λ2 above which 20% of the solar emission is concentrated? (b) What fraction of total solar radiation is not useful for photo-synthesis?

3. What are the implications for the semiconductor industry that silicon has a relatively good heat conductivity?

Conclusion Questions

Analyze your results above in order to answer the following questions. Be sure to respond in complete sentences.

1. What is the half-life of uranium-238?

2. What is the half-life of lead-206?

3. What is the main difference between alpha decay and beta decay?

4. Is there an application for either type of decay that is beneficial to humans?

5. During radioactive decay, which additional type of radiation is often emitted along with alpha or beta particles?

6. Why does the table not include the type of radiation discussed in question five?

7. Including your answer for question five, list the three main types of decay particles in order from least penetrating to

most penetrating. Include the type of material that stops each type of radiation.

20 liters of water at 20 bar and 100 °C are in a variable volume container. 56,000 kJ of heat are added to the system at constant pressure which causes an increase in both temperature and volume.

Draw a schematic of the process

Write the energy balance for this process and clearly state any assumptions:

What is the final volume of the container?

How much work in [kJ] is completed? Pay careful attention to your negative signs!

In one sentence explain your answer from Part D in the context of the process described in the problem statement and the heat that is added to the system.

Isle Royale, the islands of Cape Hatteras National Seashore, Nantucket, California's Channel Islands, and Elliott Key in Biscayne National Park are all islands, but they all formed in different ways. Describe the different geological processes that created these different islands.

Procyon was determined to be is 11.4 ly from Earth via parallax. In addition, astronomers found that Procyon is a binary system. Procyon B, the companion, has a maximum angular separation from Procyon A (semimajor axis) 4.35 as (arc second).

(a) What is the distance between Procyon A and Procyon B? Answer in km and in AU. What planet(s) in our solar system is (are) closest to this distance from the Sun?
(b) Procyon B is observed to have an orbital period of 40.8 yr. What is the total mass of Procyon A and B system? Answer in km and in solar masses.

Can someone describe following quesions

a) the relationship between the catabolism and anabolism.

b) the differences between sterilization in batch and continuous systems

The Cost of Economic Growth In Chapter 7: The Environment – Part II, Hite and Seitz (2016) discuss the existing tension between development and the environment. Development brings economic growth as well as social and environmental changes. To a developing country, economic growth may be of a higher priority than the consequences to the long-term health of its citizens or its environment. On the other hand, poverty can also harm the environment such as how searching for land to farm contributes to deforestation. Do wealthy nations using the labor of developing nations have responsibilities to the people and environment of that country? Why or why not? Be sure to use examples of existing companies to support your response.

In as much as Zimbabwe has quite a number of sources related to geothermal energy production, give reasons why the technology has not been installed in the country. In your answer state the areas with sources. [20 MARKS]