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An organism can exchange matter and energy with its surroundings. Thus, any change in an organism's energy content must be balanced by a corresponding change in the energy content of the surrounding
Beginning with fertilization, describe the main stages of animal development. Give a brief, simplified description of each stage.
Discuss the rationale behind taxonomists placing sharks and dolphins in different taxonomic groups, even though they are both aquatic, have very similar body forms, and share other traits as well.
Your neighbor added a farmer's porch to his house and painted the ceiling of it blue. When you asked him why, he told you he had read that the sky blue ceiling would fool wasps into thinking it was
Some organisms reproduce sexually while others reproduce asexually. Define both types of reproduction. What are the advantages and disadvantages of reproducing each way? Name two organisms that repr
Some sources of information state specific nutrients in higher concentration in goat's milk, than in cow's milk. Please look for some information countering the goat milk side and also a detailed nu
A group of 11 mice were given water and another group of 10 mice were supplied with diluted black coffee (coffee:water 1:1) as drinking fluids for five weeks.
A new species has been discovered. The animal is a vertebrate, approximately 18-24 inches in length. Members of this species are covered in scales and are known to lay shelled eggs.
After college, with the help of her dad, she opened a small wholesale greenhouse. The business was a modest success and allowed Martha to experiment with new growing methods.
a brief but quite informative account of aromatherapy which is a a type of alternative medicine. The interesting origin, developments,definitions,chemical composition and mode of action of essentia
Describe the negative impact the organism is having on the natural world of your area. Finally, discuss what is being done to control this species and suggest what might have been done differently t
Name two plant tissues in which dead cells are useful. Describe the structure and function of each tissue, showing how the dead cells contribute. Why couldn't animals make use of dead cells in the s
If a girl carved her initials in the trunk of a maple tree at a point five feet above the ground twenty years ago, and the tree grew at a rate of one foot per year, where can she expect to find her
A cube of potato tissue was incubated for a set amount of time in various different sucrose solutions, and the weight of the potato tissue determined both before and after incubation. The weight dif
What pteridophta reproductive structures look like and what are those structure called.
what are seedless vascular plants reproductive structures called and what do they look like.
Describe how xylem and phloem function with regards to movement of water, minerals etc from roots to leaves in a transpiring plant and from leaves or source organ to sink organs.
Structural modifications to the orchid from the angiosperm Monocot family to leaves, roots, stems, or flowers that result in adaptive functions.
The selective permeability of a plant cell's plasma membrane controls the movement of solutes between the cell and the extracellular solution.
You have a goldfish pond in your back yard. It is stocked with goldfish and water plants. There are aerobic bacteria in the pond also. What is happening with the oxygen and carbon dioxide levels in
When comparing nodule specific nitrogenase activities in control and nitrate treated plants at 20% oxygen, why is it necessary to express nitrogenase activity per gram fresh weight of nodule tissue?
How would animal life be affected by this atmospheric change? Explain why in terms of your knowledge of cellular respiration.
Name and describe the major reactions and sites of reactions of photosynthesis.
If photosynthesis is to occur at all, the plant must be able to intercept light. The better a plant is in intercepting the light, the greater opportunities the plant has to produce food.