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love history [14]
3 years ago
6

two runners were competing to see who could run with a greater average speed. Runner A ran 12 miles in 3 hours. Runner B ran 9 m

iles in 2 hours. Which runner ran with a greater average speed
Biology
1 answer:
zubka84 [21]3 years ago
5 0
Runner B took about 13.3 mins per mile while Runner A took about 15 mins per mile so runner be ran faster
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Which statement describes a step in DNA replication
Lynna [10]
The double helix unwinds and each strand forms a template for a new strand — I’m pretty sure!
4 0
2 years ago
The population change equation is Population Change = (Natality - Mortality) + (Immigration - Emigration). Which equation would
Snezhnost [94]

Answer:

B. natality + immigration = mortality + emigration

Explanation:

Migration refers to the movement of a group of people from one geographical region (location) to another geographical destination in search of better living conditions, work or social amenities.

Migration selectivity can be defined as the likelihood or tendency that a subset (part) of a group of people are going to move (migrate) out of a particular geographical location or area.

Some of the factors that influence migration selectivity are income level, age, education, gender etc.

Population change equation states that the change in the size of a population over a specific period of time is equal to the sum of the number of births and the number of immigrants that joined.

Mathematically, the population change equation is given by the formula;

Population Change = (Natality - Mortality) + (Immigration - Emigration)

Therefore, the equation which would create a stable population is given by the formula;

Natality + immigration = mortality + emigration.

8 0
2 years ago
Read 2 more answers
Rachael wants to test how sunlight impacts plant growth over time. She will add varying amounts of light to different sets of pl
Mrrafil [7]

Answer:

Independent variable: varying amounts of light

Dependent variable: plant growth

Explanation:

The variable, which are factors that can be altered, in an experiment can either be independent or dependent. An independent variable is one in which the experimenter manipulates or controls in order to bring about an outcome. For this experiment conducted by Rachel, the independent variable is the VARYING AMOUNT OF LIGHTS.

The dependent variable is the variable that responds to changes of the independent variable. In other words, the dependent variable is the outcome of manipulating the independent variable. Hence, the dependent variable is dependent on the independent variable. For Rachel's experiment, the PLANT GROWTH is the dependent variable because it is what responds to changes in amount of light (independent variable).

4 0
2 years ago
A population is all the members of one species living in a particular
Dmitry [639]

Answer:

All the members of one species in a particular area are referred to as a population.

Explanation:

7 0
2 years ago
Explain why DNA requires structural robust and efficient storage and organization mechanisms/structures.
wel

Answer:

DNA packaging contributes to the compaction of the genetic material into cells that are many times smaller and also regulates gene expression and cell replication in living systems.

Explanation:

DNA is a fundamental molecule that contains instructions that make each organism unique. Each chromosome is composed of a very long linear DNA molecule associated with histone proteins that compact the genetic material, which is known as DNA packaging. Transcription and replication require that both strands of the DNA separate. Nonetheless, during DNA packaging, nucleosomes and the folding into chromatin fibers ensure chromosomal DNA is correctly packaged inside smaller nuclei. In consequence, DNA packaging not only enables the compaction of long linear DNA into the cells but also is involved in key biological processes such as gene regulation (transcription) and cell replication.

3 0
3 years ago
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