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Oliga [24]
3 years ago
15

Human pregnancy is indicated by the presence of chorionic-gonadotropin metabolites in the urine until _____.

Biology
1 answer:
NARA [144]3 years ago
8 0
The baby is born hope this helps
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Akira creates a reaction without a catalyst, then repeats the reaction with a catalyst.
Romashka [77]

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Akira turns in a written lab report to his science teacher. ... Akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowered the activation energy needed to start the reaction.

6 0
3 years ago
Pllzz help me plzz asap
likoan [24]
The first answer is c by decomposition.
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4 0
3 years ago
If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result? Less water would be av
jolli1 [7]

Answer:

4th one is correct :)

More carbon dioxide gas would be found in Earth's atmosphere

4 0
2 years ago
Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, calcium, potassium, magnesium
serg [7]

Answer:

Magnesium, calcium, phosphorous, sulfur these are essential nutrients for plants. These are required in trace quantity but are very important for plant life. Point A. will be correct answer.

Explanation:

As in B. starch n cellulose are composed of only carbon, oxygen and hydrogen.

As in C. These elements are not required on special occasion but are necessary throughout plant life.

As in D.  C H N O  is the primary component plants need but these secondary nutrients are equally necessary for growth n structure of plant.

<u><em>So answer A. Is the correct option.</em></u>

Calcium plays the most important role in structure formation of plants. Also act as messenger molecule in signaling. Deficiency  of calcium caused wilting , weakened stem and ultimately death of plant.

Magnesium is the key element in chlorophyll molecule. It is necessary for chlorophyll formation.

Sulfur is another very important element in plant life, it is necessary for protein synthesis in plants.

Phosphorous plays an important role in  process of cell devision , photosynthesis and respiration.

Potassium is very crucial in gaseous exchange ,it operates the opening and closing of stomata.

3 0
2 years ago
Write a paragraph about how the metamorphoses of hutterflies and frogs are different​
Alexeev081 [22]

answer:

A frog is a carnivorous amphibian having a five-stage life cycle, whereas a butterfly is an insect having a four-stage life cycle. The difference...

A frog is a carnivorous amphibian having a five-stage life cycle, whereas a butterfly is an insect having a four-stage life cycle. The difference...See full answer below.♥️

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