A barometer is used to measure

a.

wind speed

c.

air pressure

b.

wind direction

d.

precipitation location

Explain why we pay attention to the cells of the skin, and organ, when we talk about the overall health or the skin. in other words, what is the relationship between the cells and organs?

According to the theory of endosymbiosis, early eukaryotes evolved by symbiotic association of prokaryotes.

Sample Response: The sound of the drumstick hitting the metal bar will get to me in a shorter amount of time in Scenario 1.

Which statement is true about the male reproductive system? The testes produce semen. a. Sperm cells are the largest component in the composition of semen. b. The scrotum functions to keep the testes at an optimum temperature. c.

Do centralean diatoms have symmetry

Which is the average of the mass number of an elements isotopes

Unlike gradualism, punctuated equilibrium involves a. a slow change in evolution over time. b. stable periods of change interrupted by rapidly occurring change. c. species that are said to be in equilibrium. d. a steady change in evolution over time.

Leon made a study chart about human-induced changes to the environment. Environmental Changes Caused by Humans X Results from introducing harmful substances into the environment Example: oil spill Y Results from natural areas being cleared and

Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin's work after he returned home from his voyage prompted him to ask which question? Do living things change over time, and if so, how?

What day is considered to be the first day of a female's reproductive cycle?