Which of the following is an example of competition?
a) cats living in two different homes eat the same brand of cat food
b) three species of bird feed at different heights in the same tree
c) the leaves of a tree prevent a small shrub from getting sunlight
d) zebra and giraffes feed on different grassland plants
Answer: c) the leaves of a tree prevent a small shrub from getting sunlight
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There is generally only one valid explanation for an observation
Indicate whether the statement is true or false
The most dangerous arrhythmia is ____
a. bradycardia b. heart failure c. tachycardia d. atrial fibrillation e. ventricular fibrillation
Mitochondria are associated with the production of _____.
ATP Nucleic acids Lipids Protein