It is a theory supported by overwhelming scientific evidence.
Answer:
cleaning
Explanation:
If people would clean up after themselves, the world's rivers and lakes would be clean. Water pollutants can be somewhat easy to remove by taking the trash out of them.
Hydrogen Cyanide is an example of a blood agent.
<span>This is a true statement.
Cantatas are divided into contrasting sections which are referred to as movements.
Cantata was mostly being applied exclusively to choral works which are distinguished from solo vocal music.
Cantatas retained its original Italian usage to which described a secular vocal piece of extended length and was different in sections and being italianated in style.</span>
Answer:
Constant variables
Explanation:
Elaina's investigation lacked the critical ingredient of constant variables which are important components of every scientific investigation. In every research, there are 3 important variables, namely:
1. Dependent variables: the actual variable to be measured during the course of investigations and whose values are dependent on another variable (independent variable) supplied by the investigators.
2. Independent variable: one of the variables that are supplied by investigators whose values are often manipulated to see the kind of changes it will cause to the dependent variable.
3. Constant variables: other variables that are neither independent nor dependent but constant for all the various experimental groups in investigations.
