How fast does sperm regenerate?

What is a biological indicator?

What property of water best explains why the blue water moved up the celery stalk? a - specfic heatb - surface tensionc - densityd - capillary action

In functional genomics, biologists use sequence information to identify the functions of various parts of genomes.

The lower leg jolts when struck just below the kneecap. Our eyes blink shut when an object moves quickly towards our face. These are examples of A. reflex reactions. B. short-term memory. C. sensory overload. D. learned responses.

Which statement could be a possible explanation for the drop in mercury concentration in the fish of Onondaga Lake between the years 2002 and 2003? (1) Between 2000 and 2005, a large number of fish were sampled.

Nutrients circulate endlessly throughout the environment in complex cycles called

Infectious diseases are caused by infective agents like bacteria, viruses, fungi or insects. Infectious diseases can be transmitted by all BUT ONE of the following. That is

How do cold, deep water upwellings increase organisms in an area?

Definition: all the individuals of a species that live together in one place at the same time

Explain how the biosphere interacts with the geosphere