1
state the problem
2
hypothess (prediction)
3
design the experiment
4
record and analyze the date
5
conclusion (what did you learn)
Answer:
D. There is a reduced use of pesticides, herbicides, and fertilizers
Explanation:
Answer:
1
Explanation:
cardiovascular and respiratory
Answer:
Small external openings of lungs help in two ways:
1. It helps in trapping the dust and pathogens like bacteria, fungal spores et cetera. Larger opening would provide dust and pathogen a wider area to enter into the body.
2. The smaller opening prevents the drying of the respiratory membrane. A moist membrane is essential for the successful exchange of oxygen and carbon dioxide in the lungs.
Answer: Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.
Explanation:
