Which of the following is/are true about natural selection?
A. It assures the survival of every fit individual.
B. It acts on genotypes rather than phenotypes.
C. It always selects for more complex forms.
D. On average, it favors the survival of individuals that have adaptive characteristics.
E. All of the answer choices are correct.
Answer: D
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Based on the literature, you hypothesize that students in traditional biology lectures will have the same grades as students in online biology lectures. You decide to test your hypothesis by comparing grades of students in traditional and online biology lectures over a semester. As a result of the experiment, you observe that the grades in the traditional lectures and the grades in the online
lectures are not significantly different. What do these observations allow you to do? A. develop a scientific theory B. reject the hypothesis C. accept the hypothesis without further question D. reject the null hypotheses
You collect and measure samples of ice and surrounding ice water from a stream in the winter. You find that you collected the same number of water molecules in each form. The volume of the ice samples are larger than the ice water samples. This is a result of
A. the ionic bonds between the water molecules being unstable and constantly forming and breaking that increases the volume and decreases the density of the ice. B. the covalent bonds between the water molecules being unstable and constantly forming and breaking that increases the volume and decreases the density of the ice. C. the covalent bonds between the water molecules being in a fixed position that increases the volume and decreases the density of the ice. D. the hydrogen bonds between the water molecules being unstable and constantly forming and breaking that increases the volume and decreases the density of the ice. E. the hydrogen bonds between the water molecules being in a fixed position that increases the volume and decreases the density of the ice.
It takes one calorie of heat to raise the temperature of one gram of water one degree Celsius at sea level. This is referred to as the ____ of water
a. specific heat b. heat of fusion c. homeostasis d. vaporization e. heat of transformation
What conditions are necessary for a population to be at equilibrium?
What will be an ideal response?