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Questions (56)

Explain the concept of trophic levels in an ecosystem and how it influences biomass distribution among the different species.
1. 2 answers
2. 8,912 views
What is the name of the process by which plants take in sunlight, carbon dioxide, and water, allowing them to make sugar and
1. 34 answers
2. asked by BB
3. 10,999 views
Leaf-cutter ants cultivate fungus. The ants keep conditions optimal for fungus growth and carry leaf fragments for the fungus to
1. 36 answers
2. asked by BB
3. 17,479 views
Does it take energy for polymerization reasctions to proceed or ddo they occur spontaneoulsly?? Why or why not??http://en.wikipe
1. 1 answer
2. 423 views
Write the equation of the line passing through (2,-3) and (2,4). Write the answer in slope-intercept form.
1. 4 answers
2. 459 views
f(x)=x2(squared)-7x+10, find (a)f(0), (b) f(5), and (c) f(-2)
1. 6 answers
2. 325 views
-3x+4y=11
1. 5 answers
2. 370 views
f(x)=-2x-5
1. 6 answers
2. 277 views
Is this right if I substitute -2 for x?f(x)=x^2-7x=10 f(-2)=-2^2-7(-2)+10 f)-2)=-4-(-14)+10 f(-2)=-8
1. 4 answers
2. 320 views
Solve the following by graphing:2x - y = 4 2x - y = 6
1. 1 answer
2. 382 views
Theater tickets are $8 for general admission and $5 for students. During one evening 240 tickets were sold, and the receipts
1. 1 answer
2. 447 views
Solve the following system by using either addition or substitution. If a unique solution does not exist, state whether the
1. 4 answers
2. 510 views
Solve the system by graphing.x+y=4 -x+y=2 How do I graph this?
1. 2 answers
2. 499 views
Is there a certain rhyme out there to help study state capitals?
1. 2 answers
2. 514 views
Toulmin Model and Campus Gun Control?I'm getting really confused about this. I need to break down an article according to the
1. 2 answers
2. 1,213 views
The expected number of heads in 160 tosses of an unbiased coin is ___.
1. 3 answers
2. 981 views
Describe what happens to the three points of concurrency that determine the Euler line when the triangle is (a) isosceles, (b)
1. 1 answer
2. 449 views
Two parallel plates, each with zero mass and an area of 10,000 cm2 are set 0.1 mm apart and the space between them is filled
1. 1 answer
2. 518 views
The great galaxy in Andromeda has an angular diameter along its long axis of about 5 degree. Its distance is about 2.2 million
1. 4 answers
2. 3,702 views
Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The balanced equation is
1. 4 answers
2. 1,794 views
I was wondering if anyone could help me with these questions. I have put what I feel are the correct answers. Please let me know
1. 4 answers
2. 685 views
I need help with a couple of questions. I have included what I think the answers are. Could you let me know how I did?1- A woman
1. 1 answer
2. 404 views
you have 4 blue crayons, 2 red and 3 orange, what is the probablity of pulling a red crayon and then an orange without
1. 2 answers
2. 670 views
I need help with a few questions. Could you let me know if I'm going in the right direction.1- CHAMPVA would be considered a
1. 4 answers
2. 593 views
If a quadrilateral has 4 congruent sides and congruent diagonals. Could it immediately be concluded to be a square?justify the
1. 1 answer
2. 452 views
what's the difference between genetic engineering and gene splicing?
1. 1 answer
2. 770 views
Serious is to careful as nervous is to____________
1. 1 answer
2. 388 views
Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C.
1. 1 answer
2. 1,361 views
A 0.12-mole sample of nitrogen gas occupies a volume of 2.55 L. What is the volume of 0.32 mol of nitrogen gas under the same
1. 3 answers
2. 3,327 views
A light rope is wrapped several times around a large wheel with a radius of 0.435 m. The wheel?A light rope is wrapped several
1. 4 answers
2. 3,603 views
In February 2004, scientists at Purdue University used a highly sensitive technique to measure the mass of a vaccinia virus (the
1. 6 answers
2. 2,867 views
f(x) = (3x^3+5x^2+8x-8)/x find the derivative
1. 1 answer
2. 290 views
A parallelogram ABCD has perimeter equal to 124. Let E be the foot of the perpendicular from A to BC, and let F be the foot of
1. 1 answer
2. 469 views
A Car moving North at 9 m/s strikes a stationary car of equal mass. The first car moves off after the collision at an angle of
1. 2 answers
2. 539 views
What is the effective marginal tax rate of a government antipoverty program that guarantees every family a minimum income?
1. 1 answer
2. 374 views
A student needs to mix 50 ml. of glycine with 950 ml. of distilled water.This student has only a 25 ml. graduated cylinder. How
1. 3 answers
2. 772 views
The difference between dysthymic disorder and major depressive disorder is that ________.A. Symptoms of Dysthymic disorder are
1. 2 answers
2. 609 views
A sample of gas at 57oC and 1.02atm occupies a volume of 2.20L. What volume would this gas occupy at 107oC and 0.789atm?
1. 4 answers
2. 531 views
A sample of gas at 57C and 1.02atm occupies a volume of 2.20L. What volume would this gas occupy at 107C and 0.789atm?
1. 7 answers
2. 756 views
A sample of gas is collected by water displacement. The atmospheric pressure in the room is 757mmHg and the vapor pressure of
1. 3 answers
2. 962 views
Compare the diffusion rates of hydrogen and oxygen gases.
1. 2 answers
2. 568 views
Explain the relationship between the various properties of gases including pressure, temperature, volume, amount of gas, molar
1. 1 answer
2. 348 views
What is the topic sentence of this paragraph from life without gravity?
1. 88 answers
2. 11,105 views
Suppose you used a 300 Hz tuning fork to produce resonant frequency in a tube whose diameter is 3.0 cm. At what length of the
1. 5 answers
2. 1,370 views
1. What volume of O¬2(g) is consumed in the combustion of 50.0 L of butane (C4H10) if both gases are measured at STP?
1. 1 answer
2. 460 views
You want to purchase a new car in 8 years and expect the car to cost $21,000. Your bank offers a plan with a guaranteed APR
1. 2 answers
2. 1,288 views
Suppose you take out a 45-year $100,000 mortgage with an APR of 6%. You make payments for 2 years (24 monthly
1. 2 answers
2. 1,306 views
A number game is played with a number cube and a number line.The figure shows a number line. The numbers on the number line
1. 7 answers
2. 2,635 views
A 7.10 percent coupon bond with 14 years left to maturity is priced to offer a yield to maturity of 7.9 percent. You believe
1. 1 answer
2. 828 views
solve and write in scientific notation 1.64x10^3+1.4x10^4+7.5x10^3
1. 3 answers
2. 556 views
The Osage Indians were a sedentary tribe, which means they moved from place to place to find.True or False
1. 3 answers
2. 357 views
Which of the following is the main idea of a story?(1 point)A. the idea that connects the story’s parts B. the message that
1. 19 answers
2. asked by BB
3. 3,529 views
What is the role of cellular respiration in living organisms?
1. 2 answers
2. 11,662 views
Some types of algae can grow together with fungi. The fungi provide nutrients from decaying matter to the algae, while the
1. 49 answers
2. asked by BB
3. 16,855 views
Pre-territorial Kansas refers to what time period in the state's history?
1. 3 answers
2. 762 views
Translate this phrase into an algebraic expression.51 less than twice Janelle's height Use the variable j to represent Janelle's
1. 4 answers
2. 654 views

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