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GalinKa [24]
3 years ago
15

What is convection heat

Biology
1 answer:
lyudmila [28]3 years ago
3 0

Heat convection is a mode of heat transfer by the mass motion of a fluid such as air. Heat convection occurs to the surface of an object where the surrounding fluid of object is heated and moved energy away from the source of heat.

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Help me!!!!!!!!!!!!!!!!!!!!!!!!
Strike441 [17]
The awnsers would be D for the first one and A for the second. Let me know if you want an explanation.
7 0
3 years ago
A humpcnid enocaom is made of two or more simple machines.
zhuklara [117]

<em>Hi! :) :) The question statement says</em>: <u>"A Humpcnid Enocaom is made of two or more simple machines."</u>

<u></u>

The answer/def: <u><em>Compound Machine </em></u>

Hope this helps! <3

3 0
3 years ago
a man is twice as old as his son.Five years ago the ratio of their ages was 9:4.Find the sum of their ages​
elena-s [515]

Answer:

75years

Explanation:

Let the Father's age be represented by 2x

Let the Son's age be represented by x

Five years ago;

Man's age will be = 2x - 5

Son's age will be = x - 5

If the ratio of their ages five years ago was 9:4, then;

2x - 5/x-5 = 9/4

4(2x - 5) = 9(x - 5)

8x - 20 = 9x - 45

- Collect like terms

-20 + 45 = 9x - 8x

25 = x

Hence, the son's age = 25 years

If x = 25, the father's age (2x) will be 2 × 25 = 50years

The sum of their ages will be = 25years + 50years = 75years

6 0
3 years ago
What is clearcutting?
liq [111]

Answer:

cut down and remove every tree from (an area)

Explanation:

hope that helps

4 0
2 years ago
The genes for a brain are found all the way down the vertebrate family tree in a small worm-like animal called amphicoelus. True
Deffense [45]

Answer:

Its false  

Amphicoelias altus (from the gr. "Hollow character on both high sides") is the only known species of the extinct genus. Titoniense, in what is now North America. Amphicoelias is present in stratigraphic zone 6 of the Morrison Formation

It was also similar in size to Diplodocus, about 25 meters long. Although most scientists have used this data to distinguish Amphicoelias and Diplodocus as separate genera, at least one has suggested that Amphicoelias is probably the largest synonym for Diplodocus.3 Amphicoelias altus, was named by paleontologist Edward Drinker Cope in December of 1877, although it was not published until 1878, for an incomplete skeleton consisting of two vertebrae, a pubis, the hip, and a femur, bone of the upper leg.4 Cope also named a second species, A. fragillimus

5 0
2 years ago
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