You have an simple of an unknown mineral. It can scratch fluorite but not quartz. What is it's approximate hardness?

Are B cells specific or can they attack a wide variety of pathogens?

Euglena can be classified as both: A) Autotroph and a parasite B) a decomposer and a heterotroph C) a producer and a parasite D) an autotroph and a heterotroph

Identify 3 techniques used to clean up oil spills and explain how each process works.

What are similarities and differences between strawberry DNA and human DNA

Which are true statements about anaerobic respiration?

Which of the following is NOT an age-related change affecting the heart? A. decline in cardiac reserve B. fibrosis of cardiac muscle C. atherosclerosis D. thinning of the valve flaps

When they match is burn chemical and potential l energy is converted to thermal and

What is the molten iron and nickel in the core of the earth thought to contribute to

If the seawater carbonate ion concentration is 270_mol/kg, what is the approximate rate of calcification, and approximately how many days would i take 1 square meter of reef to accumulate 30mmol of calcium carbonate (CaCO3) ?

What is the importance of decomposers in an ecosysyem such as mold?