The answer is durability and flexibility
What physical properties of nylon and leather make them good materials to use for shoelaces? A. high density and low conductivity B. durability and flexibility C. hardness and durability D. low viscosity and flexibility.
3. control
4. dependent variable
5. empirical evidence
6. hypothesis
7. independent variable
Need definitions
Answer:
Applied Research: It is a research conducted to find solutions for specific problems in a particular field of studies. Example, health effects on food that are genetically modified.
Basic research: It is basic research on any field to have a clear understanding of something from the existing knowledge. Example, the study on evolution of the living organisms.
Control: To increase the reliability of the result the scientific experiments decrease the number of variables (depending factors) in the experiment.
Dependent variable: This is a variable that determines the outcome of the result of an experiment depending on the independent variables. For example, stress influence the heart rate. Heart rate is a dependent variable.
Empirical evidence: It is the collection of scientific facts directly or indirectly. These facts support the scientific nature of the research. For example, measuring temperature, water freezing at a particular temperature and pressure.
Hypothesis: It is an explanation or assumption of a phenomenon based on limited empirical evidence. This is the first step of the research.
Independent variable: This is a variable that the experimenter has control to change. For example, stress influence the heart rate. Stress is an independent variable.
B.the great distance between the sun and the planets
C.
force of gravity the galaxy exerts on all objects in it
D.the gravitational force between the sun and each object in the solar system
B. The amount of sunlight reaching the environment stays constant.
C. More sunlight reaches the environment.
D. Less sunlight reaches the environment.