A disease has spread killing plants in this freshwater ecosystem what is true about the impact of this disease? 1. small fish that rely on the plants for protection will decrease in population

2. the large fish population will increase

3. the oxygen in the water will increase

4. the frog population will increase

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

The activity of the modern sample is 1.10 bq . how long does that measurement take?