Answer:
Two and a half billion years ago, single-celled organisms called cyanobacteria harnessed sunlight to split water molecules, producing energy to power their cells and releasing oxygen into an atmosphere that had previously had none.
Explanation:
Answer:
It's A
Explanation:
DNA stores genetic information.
Volume - the amount of something in a three-dimensional area.
Meniscus - the curve that a liquid makes at the surface from surface tension.
I measured the volume of water in the container.
The water formed a meniscus near the top of the container.
<h2>Intercostal Muscle</h2>
Explanation:
Very young children tend to breathe predominantly with their diaphragm because:
c. their intercostal muscles are not fully developed.
Intercostal muscle are located between the ribs and helps in the movement with of the chest. These help in increasing the volume of the chest and are mainly associated with the breathing. Young childrens do not have very well developed intercostal muscle and so they use their diaphragm to breathe.
Answer:
25%
Explanation:
Una persona de fenotipo sano A puede presentar dos genotipos diferentes para la enfermedad en cuestión Aa o AA.
Un macho de fenotipo sano puede presentar los mismos genotipos que la hembra.
Suponiendo que la hembra y el macho presentan genotipo Aa podemos obtener para cada uno dos gametas diferentes A y a. Cruzamos las gametas y obtenemos:
A a
A AA Aa
a Aa aa
only genotype aa presents the disease phenotype
