Answer:
Explanation: The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
- 97% of all the water on the earth is salt water, which is not suitable for drinking.
- Only 3% of all the water is fresh water, and only 1% is available for drinking.
- 2% of the available freshwater sources is locked in ice caps and glaciers.
With growing population rates and such a small percentage of all the water on earth, it only makes sense that we must preserve and conserve this precious resource.
Answer:
To help plants grow strong root structures and large flowers
A recent study of a model organism found that a specific HMG protein localized mainly to the ends of chromosomes. Given this result, the site of localization for this HMG protein would correspond to regions in humans that Contain heterochromatin similar to that of centromeres.
Telomeres are regions at chromosomal ends that are time and again truncated with every round of the cellular department. Centromeresjoin sister chromatids and are required for correct chromosome division for the duration of mitosis.
Notwithstanding their different chromosomal locations, each telomere and centromere are composed of heterochromatin, a tightly condensed complex of DNA wrapped around histones.
Due to its structurally restrictive form, heterochromatin is transcriptionally inactive, which means that proteins liable for regulating gene expression can't get entry into the tightly packed DNA. As an end result, hetechromatic regions are often gene-bad and incorporate repetitive DNA.
Learn more about proteins here: brainly.com/question/10058019
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