If I still remember how to solve these.. I think it’s 50? (50 m/s)
Explanation:
The allele for sickle cell would gradually be eliminated from the populations over generations. This is because while initially natural selection favoured and fitted the allele in the environment because its bearers are less vulnerable to malaria, sickle cells also result in reduced capacity of the red blood cells to carry oxygen to tissues. Therefore in the absence of Malaria, sickle cell would thereby offer a disadvantage to an individual hence be eliminated by natural selection.
Cars up north require more antifreeze than water as a result of the colder
temperature which makes the coolant in vehicles more prone to freezing.
<h3>What is Freezing point depression?</h3>
This is a situation which occurs when solutes are added to a solvent in
order to reduce the freezing point of the solvent. The impurities help lower
the freezing point of the solvent and is commonly used in vehicles.
This is because cars in the North are exposed to colder temperatures
which could freeze the coolant(solvent).
Read more about Anti-freeze here brainly.com/question/1382943
<em>If a drop of dishwashing detergent is added near it, the paperclip most likely will;</em>
Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink.
<u>The paperclip is able to float on the surface of water due to its surface tension. </u>
<u>When soap is added to water, it reduces the surface tension. Soap disrupts the intermolecular forces that hold the molecules on the surface tightly like a film. </u>
<u>Thus, the paperclip sinks into the water.</u>
Nope. the electrons are what determine the reactivity
