Answer:
Saliva is the first line defense against disease-causing microorganisms entering the mouth. The primary source of this protection is a protein-based antibody called Immunoglobulin A (IgA), which directly fights infection-causing organisms.
Explanation:
Answer:
2.
- Whether weight of person depends on height
- Relation between height and weight
- Height and weight are directly proportional
- Test heigh and weight of people and find the relation
- People, measuring tape, weighing balance
- Take different people and record there height and then there weight, look for possible relations
- Take the people and record it as mentioned... record your results
- Plot a graph
- The results should be linear
- Weight and heigh are linear
3. Research question, hypothesis, procedure, observation, recording your data, analyzing, conclusion
Explanation:
1 earth axis 2 sunlight 3 elevation
The answer is 6.41 hope this helps
Answer:
the answer is D. Sea ice forming
Explanation:
When ocean water freezes into ice, the salts stay behind in the liquid water. This increases the water’s salinity, making it denser. The cold, dense water sinks, forming a deep-ocean density current.