Chemical changes

are only caused through burning a material

only occur to weak materials

change the identity of a substance

do not affect the identity of a substance

Which phrase best describes the usual form and function of a flowers sepal A. Has a long slender stalk to make the pollen accessible B. Is leaf-like and protects the developing flower C.

How has the discovery of DNA affected the classification of protists? Select three options. Many scientists want to get rid of the kingdom Protista. Some organisms have been moved out of the kingdom Protista.

What are 5 illnesses caused by viruses

An 18,000-watt radio station transmits at 680 kHz. Determine the number of joules transmitted per second. 18 J/s 680 J/s 18,000 J/s 680,000 J/s

Environmental conditions can affect food quality? True or false

Kiera and Grace are sisters. They both have blue eyes. Kiera is extremely short for her age and Grace is exceptionally tall for her age. Develop a hypothesis as to why the sisters have different statures.

This diagram illustrates the three types of plant tissue. A diagram illustrates the 3 types of plant tissue. Small purple structures inside of the leaves, stem, and roots are shown.

If the diploid number of chromosomes for an organism is twenty-six, what is the haploid number?

Describe two negative effects that water pollution can have on the environment. Explain one way water pollution can be reduced.

Some properties of diamond are different from those of graphite because diamond