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yaroslaw [1]
3 years ago
11

Your teacher is performing an experiment in the lab. She takes a test tube

Biology
1 answer:
pishuonlain [190]3 years ago
4 0

Answer:

a. bubbles formed

Explanation:

Bubbles are a sign of gaseous molecules escaping, meaning that something has forced molecules to break apart and escape. A chemical reaction involves any change that directly impacts the molecular formation of a substance.

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Why do organic remains need to be in anaerobic conditions for fossil fuel formation to<br> occur?
telo118 [61]

Explanation:

fossil fuels are made from decayed plants and animals that have been converted to crude oil,coal,natural gas or heavy oils by exposure to heat and pressure

oil is a liquid hydrocarbon that is formed when a rock high in organic carbon is subjected to heat and pressure

<h2>may this answer help you .....</h2>
8 0
3 years ago
10 points! When looking out of my back door, I see robins, blue jays, finches, crows, hawks and owls all living in the same area
forsale [732]

The possibility for all of the mentioned birds to live all in a same area is because they are all specialized and occupy a certain niche in the food chain, thus not standing in each others ways when it comes to competition for food.

All of these birds have adapted to be able to survive in their respective environment, developing characteristics that will enable them to be superior in something. Through natural selection, the individuals that were performing better, got the chance to mate, thus the offspring was better adapted and stronger in its niche of the food chain.

The robins and the blue jays are birds that are very opportunistic in their food choice, thus giving them greater flexibility and ability to survive, they mostly feed on worms, insects, fruits, vegetables, so they have a big menu.

The finches are specialized in eating nuts and seeds, thus avoiding the competition with the previous two, thus having that food type for themselves.

The owls and hawks are both birds of pray, but the owls hunt mostly at night, while the eagles during the day. Also, the owls prefer to have rodents as their pray, while the hawks are mostly eating other birds, thus not standing in each other's ways.

8 0
3 years ago
Help if i fail i will not pass
Vinil7 [7]

Answer:

3

Explanation:

I hope this is correct and have a great day

5 0
3 years ago
Read 2 more answers
Similarities and differences between arteries and veins
nika2105 [10]

Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation. Arteries and veins are two of the body's main type of blood vessels.

8 0
2 years ago
Hoe do compounds differ from elements
pogonyaev
Compounds are made up of elements.

Elements are the ones we pull straight out from the periodic table.

For example:
H2O, HCl, NaCl, NaOH --> these are all compounds

H, N, B, Ne, Na, Cl, O, K --> these are all elements.
4 0
3 years ago
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