Xylem and phloem combine to form which of the following?

A. epidermis cells

B. vessel members

C. guard cells

D. vascular bundles

What are two ways DNA and RNA differ?

What is the basic concept used to justify the building of phylogenetic trees

How would you use porosity in a sentence

A 4-kilogram rock is resting on the edge of a lunar crater. The edge of the crater is 150 meters higher than the bottom of the crater.

What is the name of the microscope that uses a series of magnifying lenses

If an object with a mass of 100 kg on earth is taken to a planet that has more gravity, how will this affect the object's mass and weight?

Lamarck's mechanism of change can be called

What is carrying capacity and what does it mean for ecosystems?

Why was the evolution of a coelom a critically important innovation for animals? a) The coelom can act as a hydrostatic skeleton. b) The coelom gives rise to a complex nervous system. c) The coelom made it possible for animals to colonize land.

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous