Any method of measuring the age of an object or event in years, such as using the atomic half-life

1. extinct

2. Relative Dating

3. Fossil

4. Geologic Time Scale

5. Absolute Dating

6. Plate Techtonics

Identify the phenotype of a male with the genotype XbY

How will a short-term environmental change most likely affect organisms within an ecosystem? Check all that apply. It will lead to some deaths. It will lead to speciation. It will lead to adaptation. It will lead to forced migration.

Which is a disadvantage of using genetic engineering

a student conducts an experiment to determine if ultraviolet light kills bacteria. his result do not support his hypothesis. we say that the hypothesis is

The principal hormone secreted by the corpus luteum, which prepares the uterus for pregnancy,

How many homologous chromosome alignments are possible for independent assortment during meiosis? one two three four

What kind of tests are used to analyze data for experimental treatments?

Luis is doing an experiment on plants. He wants to find out if they grow taller when they are given more water.

Which is the last step that occurred in the speciation of the galápagos finches? a. establishing genetic equilibrium b. founders arrived c. geographic isolation d. ecological competition?

Intact skin and mucous membranes: First line of defense. 2. : Second line of defense. 3. : Third line of defense. 4. : Innate defense system. 5. : Adaptive defense system.