Answer:
Qualitative observation is an observation in which the apperance of something is described using descriptive language
Explanation:
Qualitative observation is done to test the quality or purity of a substance being examined.
Qualitative observation is based on nonnumerical information.Qualitative analysis helps us to study whether a particular functional group,ion or atom is present or absent in a given sample.
Answer: The answer is C!!
Explanation:
Chloroplasts are the organelle in plant cells similar to mitochondria in animal cells. They take in Carbon Dioxide and produce Oxygen for us to breath. This whole process is called photosynthesis. Hope this helps y’all!!!
Answer;
Examples of selectively permeable materials or items are;
1. Vacuum filter- it traps dust but allows air through
2. Coffee filter- allows water to pass through, but does not allow the coffee grounds.
3. Colander -used to strain liquid food from foods. it drains water but is not permeable to larger food particles.
Explanation;
Selective permeability means that a material or a substance allows the passage of some molecules or ions and other materials to pass through it, and inhibits the passage of others.
For example a cell membrane is semi-permeable and thus regulates the transport of materials such that some particles pass through while others can not cross. A semi-permeable membrane allows selective movement of materials, it acts like a filter that allows particles to pass or not according to their size, solubility, electrical charge, or other chemical and physical properties.
The correct answer is positive feedback.
