1. Urban sprawl can lead to a chain reaction of problems as the human population of a regions increases. Which of the following is a common problem of urbanization? New roads into suburban areas can lead to less air pollution and traffic.
There are too many schools, and existing schools will longer be needed.
Most homes are built with poor materials or in dirty or unsafe living conditions.
Electricity lines serve the central city but may not go beyond the edges of the city

2. Which of the following is an impact of deforestation?
Decreased wildfires
Decreased pollution
Habitat fragmentation
More even-aged forests

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

high growth (apex)

the answer is d. embryo