Which cells protect the body by engulfing invaders or producing antibodies?

a. red blood cells

b. plasma cells

c. platelets

d. white blood cells

Which class of biomolecule do the molecules in the table belong to? A. proteins B. carbohydrates C. nucleic acids D. lipids

A kangaroo has a diploid number of 16. After meiosis, how many chromosomes would be in each cell?

Which region is located between 23.5° north and south of the equator? temperate zone tropical zone polar zone desert zone

Whales and hippos are thought to have evolved from a common ancestor around 54 million years ago. Which of the following is also true about these species? A. Whales and hippos are physically identical. B.

What type of forest exhibits beautiful fall colors before the leaves drop off of the trees? A. Boreal forest B. Coniferous forest C. Deciduous forest D. Evergreen forest

How does specific heat influence biological systems?

Which is an example of an instinct?

What best describes a grizzly bears habitat?

Drag each label to the correct location on the diagram. Each label can be used more than once. An incomplete diagram of the rock cycle is shown below. Use the labels to correctly complete the diagram

Deepest place in the seafloor is called the