In people who stand for long periods, blood tends to pool in the lower limbs and this may result in varicose veins. what causes the varicose veins?

From the producer level to which level does energy flow directly? decomposer tertiary consumer secondary consumer primary consumer

The process of moving toward an area due to chemical signals is called

Which statement best describes the cycling of carbon between the atmosphere and geosphere? A Precipitation and condensation increasing the groundwater supply B Glaciers melting due to an increase in global climate temperatures C Volcanic activity

What major change took place in California's geologic history during the Mesozoic Era? The San Andreas fault formed. The Sierra Nevada was eroded by glaciation. The Western Transverse Ranges Block rotated into its present position.

Where in the ocean are you likely to find animals that make their own light? A. The mesopelagic zone B. The continental shelf C. The epipelagic zone D. The Gulf Stream

What skill is a scientist using when he listen to the sound that whales make

13. What is another name for rod shaped bacteria? A. bacilli B. cocci C. spirilla

What process takes place in the large intestine?

Which cell structures are found in plant cells, but not in animal cells?

Even though Lebron is a great basketball player, he only won 1 championship ring. Not winning is making him depressed and therefore makes him want to eat a lot of lipids.