A is the answer to this question
Answer:
i think c, not completely sure
Explanation:
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Answer:
Los primeros en llegar a tierra no solo ayudaron a alterar los ciclos de nutrientes, sino que también contribuyeron a una de las extinciones masivas de la Tierra. Y a medida que las plantas evolucionaron, también lo hicieron los ríos, creando más hábitats para las cosas verdes y los animales que siguieron.
Explanation:
English: The first arrivals on land not only helped alter nutrient cycles, but contributed to one of Earth's mass extinctions. And as plants evolved, so did rivers, creating more habitats for green things and the animals that followed.
The given blank can be filled with liver.
The huge surface area of the small intestine helps in absorption of nutrients. The water-soluble nutrients and small fats enter the bloodstream directly. The inner surface of the small intestine comprises hundreds of folds of compositions known as villi. Within the villi, there are numerous microscopic projections known as microvilli.
The microvilli substantially enhance the surface area of the small intestine that upsurges the rate of absorption of nutrients. Upon entering the bloodstream the water-soluble nutrients are directed towards the liver prior to being transported to the cells.
During blood typing, the blood plasma is checked for antibodies. This is what is meant by "anti" in the statements. Keep in mind that if the antibody against a specific blood type is present, the blood cannot have that type. So, if anti-A is present, the blood type is not A.
Moreover, the Rh antigen determines the positive (present of Rh) and negative (absence of Rh) nature of blood type. If the anti-Rh is present, the blood type is negative. Using this information, we see that:
a) A negative
b) B positive
c) AB positive
d) O negative (O because both anti-A and anti-B are present)
e) <span>AB negative (AB because neither anti-A and anti-B are present)</span>
