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Alchen [17]
3 years ago
14

Why do whales and dolphins have blow holes??

Biology
1 answer:
Zepler [3.9K]3 years ago
5 0
Because they are marine mammals and they need them to breathe out of
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If a goal post was separated into the four pieces that make up the base,the crossbar, and the arms, and all four pieces were lai
erma4kov [3.2K]

Answer:

68 1/2 foot length

Or 22 5/6 yards.

Explanation:

The yard length of the part of the goal post

The base (10 foot)

The crossbar (18 1/2 )

And two arms (20 foot each)

Let's sum up the total yards

=(10 + 18 1/2 + 20 +20) foot

= 68 1/2 foot length

Or 22 5/6 yards.

5 0
3 years ago
AYUDAAA
Lemur [1.5K]

Answer:

11)El ciclo del agua, conocido científicamente como ciclo hidrológico, se refiere al intercambio continuo de agua en la hidrosfera, entre la atmósfera, el agua del suelo, la superficie, el agua subterránea y las plantas. La ciencia que estudia el ciclo hidrológico es la hidrología.

12)Sabems que las etapas del ciclo hidrológico  son las siguientes:

Evaporación

Condensación

Precipitación.

Las implicaciones que tienen para la vida cada una de las etapas son:

Evaporación, se reduce el nivel de los ríos, los lagos pequeños se seca, y se eleva la temperatura del ambiente.

Condensación, Es el proceso en el cual se forman las nubes, por lo que la luz solar disminuye.

Precipitación, produce nuevamente el aumento de los niveles de rios y lagos, y la disminución de la temperatura.

Explanation:

5 0
3 years ago
What are tube feet?
Margarita [4]

Answer:

Explanation:

(in an echinoderm) each of a large number of small flexible hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system.

6 0
3 years ago
_________ medicine is focused on growing specialized tissues for spinal cord injuries, diabetes, cancer, multiple sclerosis, Par
maw [93]

Answer:

Regenerative medicine

Explanation:

Regenerative medicine can be defined as a branch of translational research in tissue engineering and molecular biology that deals with replacing, engineering or replace human or animal cells, tissues or organs to restore normal functioning.

It also develops method to regrow, repair or replace damaged or diseased cells, organs or tissues.

7 0
3 years ago
Why must skeletons be hard and strong​
xeze [42]

So they aren't broken quickly, and we aren't jelly, bones help us stay strong and upright

8 0
2 years ago
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