About how many years ago do scientists suggest that the earth cooled enough for water vapor to condense.

Explain how the shape of a river's stream bed can affect the river's speed and its power to cause erosion.

sergey [27]

Explanation: The shape of a river's stream bed affects the speed and eroding power of a river by influencing the amount of friction between the water flowing through the river and the stream bed below. Friction is the force that opposes the motion of one surface as it moves across another surface. In a river, there is friction between the flowing water and the stream bed beneath it. Where a river is deep, less water comes into contact with the stream bed, so there is less friction. The reduced friction means there is less opposition to the water's motion, so the river flows at a greater speed and has more kinetic energy for erosion. On the other hand, where a river is shallow, more water comes into contact with the stream bed, so there is more friction. The increased friction means there is more opposition to the water's motion, so the river flows at a lesser speed and has less kinetic energy for erosion. Also, the roughness of a stream bed covered with boulders and other obstacles causes the water to flow through the river in a turbulent fashion. This could cause the river to move slower in some cases or erode more in other cases.

*mark as Brainliest ty*

3 0

3 years ago

Which of the following conditions leads to germination of a spore into a vegetative cell?

Elenna [48]

Answer:

A. a nutrient rich environment

Explanation:

When spores are exposed to favorable conditions, they germinate into a vegetative cell. }

Endospores contain genera of bacteria, when they form spores, bacteria can survive in hostile conditions. They are resistant to heat, desiccation, chemicals and radiation. The cell that forms the Endospore is called "Vegetative Cell".

4 0

3 years ago

Cuanto pesa y mide el hueso frontal

andriy [413]

Cuanto pesa y mide el hueso frontal-> How much does the frontal bone weigh and measure?
This depends on whose frontal bone you are weighing and measuring. Please include a picture for reference next time if you want specific answers.

7 0

3 years ago

1. Compare and Contrast prokaryote and eukaryote cells

kirza4 [7]

1: Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects. Bacteria are an example of prokaryotes. Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle.

2: Eukaryotes represent a domain of life, but within this domain there are multiple kingdoms. The most common classification creates four kingdoms in this domain: Protista, Fungi, Plantae, and Animalia. The four kingdoms of living organisms are unique in their own way. You can go to a wikipedia page for more about this.

3: animal, human, bacteria, amoeba, and mushroom. (May be wrong)

4: organelle, cells, tissues, organs, organ systems.

5: In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc.

Hope this helps!

5 0

3 years ago

Which of the following cannot be cured with existing drugs?

Lelechka [254]

All of the above.
They can be prevented, especially Polio.
Smallpox is common in children, but potentially deadly in baby's.
Influenza is the flu.

8 0

4 years ago

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