Which of the following is a characteristic of a mixture?

A. it has varying properties

B. it has a fixed composition

C. It contains only pure substances

D. It has both varying properties and a fixed composition

Compared to the time he spent in other parts of South America, Darwin spent little time collecting specimens in the Galapagos. (A) True (B) False

How could the basic compounds necessary for life have been formed on early Earth

Which organelle gives plants their green color and is the site of photosynthesis? ribosomes nucleus mitochondria chloroplasts

Name the four classes of organic compounds and explain how the carbon cycle and nitrogen cycle contribute to the usable supplies of these macromolecules

Actions that threaten a young person's physical or emotional health would be

How are condensation and precipitation connected to weather?

Today, many crops grown by farmers are genetically engineered. Which of the following is a likely risk of using genetically engineered crops? The engineered genes in the crops could be transferred to wild varieties of the plants.

In witch structures is all the genetic information of an organism found?

Red and white roses are crossbred neither are dominant The offspring would be because of

Which is a genetic counselor least likely to recommend for a client who has been unable to become pregnant? A. vision testing B. fertility testing C. blood analysis D. family history analysis