When did large numbers of fossils first appear in the geologic record?

In plants cellulose is a rigid tube that allows plants to maintain their form Which similar structure and support system is found in insects A. Exoskeleton B. cytoskeleton C. Endoskeleton D. musculoskeleton

How do the circulatory and respiratory system interact to provide muscle cells with oxygen during a long distance race?

Limestone is often used: a. as a building material. c. in cosmetics. b. in cooking ware. d. in the manufacturing of automobiles.

What are different types of volcanoes based on magma type

What is a major benefit of schooling? reproduction hydrodynamic efficiency division of labor aerodynamic efficiency

What unit of measurement would I use to measure the length of a snicker bar

Which sensory organ would best detect the taste of an insect?

Within an infected wound bed, many cell types are involved in protecting the host and eliminating the "foreign invaders" to promote wound healing. How does the identification of body tissues from foreign substances occur?

Outline the evolution of monotreme, marsupial, and placental mammals.

Scientists can classify plants into two major groups based on reproductive structures of the plants. What are these two groups called? Choose the correct answer.