1. Scientific method is the techniques that scientists used to carry out investigation process. It is made up of five steps, which are:
a. Observation: this is the stage in which a scientist make an observation to which he did not have an explanation.
b. Formation of a research question: in accordance to observation made, the scientist form a question on which his experiment will be based
c. Formation of hypothesis: at this stage the scientist offers a proposed explanation for the observation which he had made and state what he expects at the end of the experiment.
d. Conduction of the experiment: at this stage the scientist carry out the experiment using appropriate means.
e. Analysis of data and drawing of conclusion: this is last stage of the investigation, at this stage, the scientist analysis the results he obtained and draw a conclusion based on the results of the data.
2. Scientists used scientific method to carry out scientific investigations because the method minimize the influence of bias and prejudice in the experiments that they carry out. The method provides an objective, standardized approach to scientific investigation; this result in reproducible results which can be achieved by other scientists in every parts of the world. The method also helps to minimize errors during investigation.
The appropriate answer is e. gymnosperm. Gymnosperms have seeds that are not protected by an ovary or fruit. A popular example of a gymnosperm are conifers. Another characteristic of gymnosperms is that they do not have bright flowers. The Greek word for gymnosperm literally translates to naked fruit. The seeds of these plants are open to the air and as such they are directly pollinated by the wind.
Answer;
Sodium (Na)
A single sodium atom has 11 protons, 11 electrons, and 12 neutrons.
Explanation;
For any neutral atom, the number of protons is the same as the number of electrons. If an atom loses or gains electrons, it is called an ion.
A sodium atom contains 11 protons, so its atomic number is 11. Mass number is the total of the protons and neutrons together, thus sodium has a mass number of 23.
Water on the earths surface is HEATED and RISES into the air as WATER VAPOR
Answer and Explanation:
Cellular respiration is the process through which organic compounds are broken down enzymatically in the mitochondria to release energy. The reaction involves oxidation of oxygen to carbon dioxide and water and reduction of glucose. The main inputs are oxygen and glucose and outputs are carbon dioxide, water and ATP.
