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e-lub [12.9K]
3 years ago
11

When oxygen first was released in the early seas it combined with iron to form

Biology
2 answers:
Liono4ka [1.6K]3 years ago
3 0
“D” would be the best answer choice for me.... not sure if it’s correct though
artcher [175]3 years ago
3 0
In my opinion i would go with answer “D, DNA molecules” hope this helps and have a good day
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Which trophic level has the most energy
Natasha2012 [34]

Answer:

The lowest level, which is usually the producers.

Explanation:

This is because on every level of the trophic system, some energy is lost before the next level. So the level with the least lost energy is the lowest

6 0
3 years ago
What are the levels of organization in biotic factors?
Nuetrik [128]

Nivel subatómico: lo integran las partículas más pequeñas de la materia, como son los protones, los neutrones y los electrones.

Nivel atómico: lo componen los átomos, que son la parte más pequeña de un elemento químico que puede intervenir en una reacción.

Nivel molecular: está formado por las moléculas, que se definen como unidades materiales formadas por la unión, mediante enlaces químicos, de dos o más átomos, como por ejemplo una molécula de oxígeno (O2) o de carbonato cálcico (CaCO3).

Espero te sirva

7 0
2 years ago
What is the relationship between the Golgi apparatus and the plasma membrane?
AnnZ [28]

Answer:

The answer is C

Explanation:

Proteins that were sinthesized in the endoplasmic reticulum are able to leave this organelle inside vesicles that are formed through evagination of the reticulum membrane. These vesicles can merge with the golgi membrane, spreading its contents inside the golgi apparatus. This process can be repeated through all of Golgi's cisternaes, and when the last cisternae is reached, these vesicles can be directed towards the plasma membrane. Once the vesicles and the plasma membrane are merged, all the molecules that were contained inside the vesicle are exported from the cell into the extracellular space.

8 0
2 years ago
URGENT!!! Why do identical twins have the same set of genes?
Gnom [1K]

Answer: 3. They were born of one fertilized ovum.

Explanation: A zygote is formed

when an egg is fertilized by a sperm. The zygote then undergoes a mitotic division into two and each half will further develop into a separate embryo. The two embryos formed will develop into identical twins.

7 0
3 years ago
Read 2 more answers
Someone please help, these questions are hard
Allushta [10]

Answer:

B: Polyermase Chain Reaction

Explanation:

PCR is when we take a segment of DNA and multiply it! We can see that the number of DNA segments are increasing therefore it is PCR. Hope this helps!

8 0
3 years ago
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