The number of protons,neutrons,electrons, the way the are classified (earth metal, noble gas,meteoroids) and also the way they react.
Answer:
After watching a plant for a week, you determine it needs more sunlight.
Explanation:
Inference is a process by which, through certain data, a conclusion is reached. Other synonyms for inference are conclusion, implication, ilation and consequence.
Accordingly, an inference is made when after watching a plant for a week, you determine that it needs more sunlight. This was a conclusion based on data.
Not all inferences offer true conclusions, even with data analysis. It is possible to state that all dogs are furry animals with four legs, but it cannot be inferred that all furry animals that have four legs are dogs.
Inferences usually arise from an analysis of characteristics and probabilities. If someone makes reference to an animal with four legs, hairy and wagging its tail, it can be inferred that the most certain thing is that it is referring to a dog.
Answer: the physical changes that occur in the body as sexual development reaches its peak
Explanation:
Puberty refers to the transition of a child into an adult. It is characterized by several physical changes induced mainly by hormones. These changes include:
- deep voice in males; high pitch voice in females
- growth of pubic hairs in males and females
- presence of thicker skin in males; delicate and lighter skin in females
- emergence of breast in females, broad chest in males etc
The answer is B. Natural selection will find a way to affect one, then that one will affect many others.
Answer:
What is the effect of power/magnification on the frequency and size of organelles under a microscope?
Explanation:
Organelles within the cell are responsible for carrying out various functions. Some cells are more specialized than others, and may have particular organelles at a higher frequency, or showing a variation in size; sub-cellular structures become more visible at higher magnifications under the microscope.
Hypotheses:
- organelle A's frequency decreases while B's frequency increases at higher magnifications
- organelle A's size increases while B's size decreases at higher magnifications
<em />
<em>Dependent variables: size and frequency cell organelles</em>
<em>Independent variable: power/magnification at low (x4), medium(x10) and high (x40)</em>
<em>Controlled variables: Type of organelles, microscope used, cell examined, </em>
Method:
1. Examine the organelles A and B in a cell mounted on a slide; use the fine adjustment to focus on the cell.
- Frequency: What is the average number of organelle A versus B, seen at low (x4), medium (x10) and high (x40) magnifications?
- Size: Measure the average diameter of organelle A versus B using an ocular micrometer at low, medium and high magnification.
2. Record and tabulate observations.
