« previous next »

Author Question: The oak tree pathogen, Phytophthora ramorum, has migrated 650 km in 10 years. We (Read 1027 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Oct 27, 2013
The oak tree pathogen, Phytophthora ramorum, has migrated 650 km in 10 years. West Nile virus spread from New York State to 46 other states in 5 years. The difference in the rate of spread is probably related to
A) the lethality of each pathogen.
B) the mobility of their hosts.
C) the fact that viruses are very small.
D) innate resistance.
E) dormancy viability.


plus1

  • Hero Member
  • *****
  • Posts: 676
Reply #1 on: Nov 3, 2013
I recall doing this last year, it's B, bye bye!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

penza

  • Hero Member
  • *****
  • Posts: 1,022
Reply #2 on: Aug 17, 2014
Thanks for assisting, your answer was right!


« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

How to read a phylogenetic tree. How to read a phylogenetic tree.
Lion at Melbourne Zoo enjoying an elevated grassy area with some tree shelter Lion at Melbourne Zoo enjoying an elevated grassy area with some tree shelter
Leopard with kill in tree in South Africa Leopard with kill in tree in South Africa
The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
Manchineel Tree Manchineel Tree
A phylogenetic tree A phylogenetic tree
Video: DNA Replication Factory and Protein

For a complete list of videos, visit our video library