Throughout most of the animal kingdom, females engage in sexual behavior:
A. about once a week.
B. only when they are in estrus.
C. only when the male initiates it.
D. at regular intervals that are determined primarily by the availability of mature males.
B. only when they are in estrus.
You might also like to view...
Epithelial cells that are adapted for absorption usually have ________ at their free surface
A) mitochondria B) cilia C) microvilli D) junctional complexes E) Golgi complexes
The type of subatomic particle that does not have an electrical charge is a(n)
________. Fill in the blank(s) with correct word
The cells that we are capable of controlling consciously are the _____ neurons.
A. Somatic sensory (somatic afferent) B. Somatic motor (somatic efferent) C. Sympathetic D. Parasympathetic
Which of the following most accurately describes the location of the heart?
a. Anterior to the sternum b. Inferior to the clavicles c. Inferior to the diaphragm d. To the right of the sternum