Explain how human activity can impact the limiting factors of river ecosystems.

In 2011 and 2012, scientists working on the banana river in florida recorded a dramatic increase in the number of manatee deaths. over the past 50 years, this area has also seen the human population increase by more than 500,000 people.

Which of the following summarizes the overall climate of Earth over time? Earth's climate was unchanging until 50 years ago. Earth's climate has warmed and cooled at different times. Earth's climate has gotten consistently warmer over time.

All waves have which four characteristics? A. wavelength, frequency, amplitude, speed B. wavelength, crests, amplitude, speed C. crests, troughs, amplitude, speed

Which two sentences support only the heliocentric model of the solar system and not the geocentric model? A. The model can explain why planets appear to move backward and make loops in the sky. B.

1) Which of the following is NOT TRUE about normal microbiota? a) They begin to be established at birth. b) Physical and chemical factors affect their growth. c) They are localized in specific body regions.

Describe the events that occur during mitosis

Why would engulfing these smaller prokaryotic cells be an advantage to the larger prokaryotic cells? A) The smaller prokaryotic cell would be protected by the larger cell.

All cells have the same genetic information, but do not express the same genes. How is this possible? a. The differences are due to gene expression, which can be turned on and off. b.

Why must organisms of the estuary be adapted to varying levels of salinity? A. Fresh river water flows into the estuary B. Saline ocean water flows into the estuary C. Ocean tides increase and decrease the amount of ocean water D. All of the above

Which description shows competition in an environment? a three organisms battling over limited resources b an organism that feeds on some food c an organism that finds a place to sleep d three organisms of the same species living in an area