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barxatty [35]
3 years ago
15

A substance that influences the reaction but does not participate in the reaction is a

Biology
2 answers:
hram777 [196]3 years ago
7 0
A catalyst increases the rate of a chemical reaction without being permanently changed.
Softa [21]3 years ago
6 0
A catalyst
speeds up reaction
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a star the designation HD 12929 in the constellation Aries is approximately 60 light years from Earth's sun.this star could also
Tems11 [23]

Answer:

The star could also be said to be 360 Million Million miles from the earth's sun.

Explanation:

A light year equals 9.4607 × 10^{12} km.

This is also approximately 6 Million Million Miles.

If we expressed the answer in miles, then we have to multiply 6 by 60.

This is equals to 360.

Therefore, 60 Light years is approximately 360 Million Million miles.

Cheers!

6 0
3 years ago
The _________________ is composed of and endothelial layer that is continuous with the endocardium of the heart.
hram777 [196]

The t<u>unica media</u> is composed of an endothelial layer that is continuous with the endocardium of the heart.

<h3>What is tunica media?</h3>

Collagen, elastin, and smooth muscle cells make up tunica media. It is located halfway between the tunica externa and the tunica intima. The transverse arrangement of its strands and color make the middle coat (tunica medium) distinct from the inner (tunica intima). It not only supports the vessel but also alters the vessel's width to control blood pressure and flow.

Elastic fibers make up the majority of the tunica media in bigger vessels. The number of elastic fibers reduces as arteries get smaller, whereas the number of smooth muscle fibers grows. The strongest of the three layers is the tunica adventitia, which is the top layer. Elastic and collagenous fibers make up its structure.

Learn more about tunica media here:

brainly.com/question/15395381

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4 0
1 year ago
In the lab on Trophic Interactions you were looking at behavior of mosquito larvae. The question being asked was: Does prey beha
Korvikt [17]

Answer:

Null hypothesis: the behavior of mosquito larvae doesn't change in the presence/absence of predators added to the tanks in Treatments 2 and 3.

Explanation:

In statistics, the null hypothesis states that there are no differences between the two variables tested in the experiment, while the alternative hypothesis uses the experimental data in order to reject the null hypothesis. In this case, the alternative hypothesis will use the data from treatments 2 and 3 to confirm that predators can modify the behavior of mosquito larvae.

6 0
3 years ago
Which state was the pioneer to start fighting air pollution?
omeli [17]

Answer:

California

Explanation:

The first recognized "smog" fightning occured back in Los Angeles in summer of 1943

5 0
1 year ago
Scientists collected samples of each group of flies. They placed some of the flies, together, in flasks with both apples and haw
Elina [12.6K]

Answer:

D, Gene flow had been reduced between flies that feed on different food.

Explanation:

7 0
2 years ago
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