Itzel explains to the school nurse that her son, Tlahco, who has been listless and withdrawn in class, has also been restless at night because he is suffering from susto, a sudden fright he got from a traumatic experience that caused his soul to depart. What best describes Itzel’s explanation?

The simplest and most abundant form of life on Earth today is the

In a seed plant, the pollen grains are actually tiny

Current research on aggression in primates shows that

Which of the following is not a classification of mammals?

If two species of plants bloom during different seasons in the same habitat, this is known as

Which of the following is used to place and remove the dental dam clamp?

From 1790 to 1860, the U.S. Census counted each enslaved person as only three-fifths of a person. Which ideology did this decision uphold?

Darwin’s evidence that evolution occurs included

Until 1954, state-supported and sanctioned segregation along racial lines was completely legal, and school administrators often refused to allow Black, Hispanic, or Asian American children to enter a school building. This is an example of