Examlex
In repairing a car, 8 hex head bolts, 2 oil-pan bolts, 5 fender bolts, and 3 differential-cover bolts are needed. How many bolts are used in all?
Mutualistic Relationship
A type of interaction between two different species where both individuals derive a benefit.
Red-Billed Oxpecker
A bird species known for feeding on ticks and parasites found on the skin of large mammals, such as cattle and wild ungulates.
Ticks
Small arachnids, part of the order Ixodida, which are ectoparasites living by hematophagy on the blood of mammals, birds, and sometimes reptiles and amphibians, known for transmitting various diseases.
Commensalism
A relationship between two organisms where one benefits and the other is neither harmed nor benefited.
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