If the mass of a material is 104 grams and the volume of the material is 20 cm^3 what would the density of the material be

_ g/cm^3

Predict how an ecosystem would respond if either its producers or decomposers were removed.

Heterozygous genes will always display a dominant trait. a. True b. False

What are the catalysys necessary for fermentation to take place?

Antibiotics are medicines that kill or slow the growth of this type of organisim

What is the speed of a wave with a wavelength of 3 m and a frequency of. 1 Hz? 0.03 m/s 0.3 m/s 3.1 m/s 30 m/s

Photosynthesis is an example of A. an exothermic reaction. B. an endothermic reaction. C. a reaction that gives off heat. D. a reaction that emits energy.

A sedimentary rock is found to be 300 million years old. Which type of organism is NOT likely to be found in the rock? a) insects b) mammals c) fish d) land plants

James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he will place the objects in a shoebox. First he fills a balloon with water and places it in the shoe box.

What holds DNA and controles cells activities

Usually, a mutation in the promoter region of an operon causes reduced levels of synthesis of the proteins encoded by that operon. Occasionally, a mutation in the promoter region actually causes increased levels of synthesis.