The geological timescale was first developed using the fossil record, but this provided only a system of relative dating; absolute dates weren't established until the discovery of ____
Fill in the blank with the appropriate word.
radioactive decay
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Sugary secretions of plants attract various insects as a source of nutrition. In addition to pollination, which of the following can be a benefit for the plant in this relationship?
a. nutrition from the insects when they die near the plant b. cooling effect of being shaded by the insect from the sun c. protection from herbivory d. insects that can keep the plant pruned
Homeostasis refers to ____
a. the ability of a cell to reproduce b. directions the cell receives from DNA c. the maintenance of a constant internal state
d. the extraction of energy from nutrients e. the ability of organisms to move within their environment
Which of the following techniques involves using tiny DNA-covered spheres of gold or other metals to deliver transgenes into plant or animal cells?
A) Retrovirus-mediated transfer B) Pronuclear microinjection C) Electroporation D) Gene gun E) Calcium chloride transformation
Oysters have a Type-II survivorship curve
____________________ Indicate whether the statement is true or false.