Which symbol correctly represents an element (D) whose atoms contain 15 protons and 20 neutrons?

What shows the organism structures change over Generations this is science work btw

Which is an example of a genetic disorder caused by errors that occur during meiosis? A. malaria B. color blindness C. Down syndrome D. sickle-cell anemia

Identify the statement that correctly describes light and how it travels?

Pollution is an example of what kind of environmental problem

A pressure of 655 mm hg is equal to how many atmospheres

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Which atomic particle dtermines the chemical behaviour of an atom?

If you could travel to the Sun and back, about how far would you travel? A. 1 AU B. 2 AU C. 5 AU D. 10 AU

A scientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in California. What is a major benefit of this experiment? The relationship shows cause and effect. It is repeatable.