The correct answer is option D, All of the above
Some of the common characteristics of an index fossil are -
a) These are plants and animals preserved in the earth which are characteristics of a particular span of geologic time or environment
b) These must be different or easily recognizable
c) Must be abundant
d) Must have a wide geographic distribution
e) Must have a short range through time.
B. immigration! the answer of this question would be B.
Answer:
Water (H2O) is oxidized, and oxygen (O2) is released. The electrons that freed from the water are transferred to ATP and NADPH.
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.