When Sarah performed this experiment, she changed the levels of nitrogen in order to observe the changes in the morphological features of the plant.
All of the characteristics of the plant that she observed were dependent on multiple different things, but the level of nitrogen was an independent variable that she was changing at her will.
Answer:
Reliable predictions require precursors – some kind of signal in the earth that indicates a big quake is on the way. The signal has to happen only before large earthquakes and it has to occur before all big quakes.
Explanation:
A it needs to be warm ocean water
The genotypes for the two parents are
- One plant is heterozygous for both traits, and the other plant is homo-zygous recessive for both traits.
<h3>The
genotype is </h3>
Tall yellow = <u>TtYy</u>
Short green = <u>ttyy</u>
That is because if the Tall yellow plant were homo-zygous for any trait, it would develop progenies into the dominant trait. Therefore, it is necessary for that parent to heterozygous.
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