About how much time did it take for the ancestors of modern giraffes to evolve the long necks of modern giraffes?

A. a year

B. many decades

C. hundreds of years

D. millions of years

Ferns grow seeds in little cases. true or false?

With the same amount of sunlight, which will become hotter: a black asphalt road, or a white cement sidewalk? Explain your reasoning.

Write a paragraph of at least 200 words to describe the viral replication cycle. be sure to discuss the difference between a lytic cycle and a lysogenic cycle.

This is the decent of different species from a common species over many generations

What is the similarity between transpiration and guttation? Function or place?

What kind of microbe causes HIV?

Which of the following substances would NOT be found in significant amounts in the extracellular matrix of the illustrated areolar connective tissue? A. collagen B. elastin C. keratin D. proteoglycan

What could be one possible effect on human health due to an oil spill? A. Greenhouse gases being emitted into our atmosphere from the vessel can have a negative impact on our air quality. B.

What condition would an increase in bicarbonate ion lead to?

The dental formula 2-1-2-3 corresponds to what order of teeth? a. molars, premolars, canines, incisors b. incisors, canines, premolars, molars c. canines, premolars, incisors, molars d. premolars, molars, incisors, canines