Dallas, Texas had an outbreak of West Nile virus, a virus spread by mosquitos, in 2012. In 2012, the
mosquito population increased dramatically. What are the limiting factors for these mosquitos? What
changed in Dallas between 2011 and 2012?
A sample answer should include the following:
Limiting factors for this population
• Food source
• Temperature
Mates
Space
Differences in Dallas between 2011 and 2012
• 2012 was very hot in the Dallas area compared to 2011
• In 2012, Dallas had a drought, while the area had more rain in 2011

b

explanation:

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.