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Sindrei [870]
3 years ago
13

A student is using a microscope to observe samples taken from pond water. She notices something that she thinks may be a living

thing. Which argument would BEST support that the unknown sample is a living thing?
A.The sample was moving, so it must be alive, because all living things respond to their environment.
B.The sample has cells, so it must be alive, because all living things are made up of one or more cells.
C.The sample is green, so it must be alive, because plants are green and they are alive.
D.The sample was producing bubbles, so it must be alive, because only living things can have chemical reactions that would release gases.
Biology
1 answer:
Andreas93 [3]3 years ago
7 0

Answer:

B) The sample has cells, so it must be alive, because all living things are made up of one or more cells.

Explanation:

A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism.

What I'm trying to say is each cell is capable of converting fuel to useable energy.Therefore, cells not only make up living things,so they are living things. Cells are found in all plants, animals, and bacteria.

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Two or more species often live in close association with one another. mutualism is a type of interaction between two species in
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Answer:

Both species will benefit from each other. It is a +/+ interaction.

3 0
2 years ago
Give one example of an extrinsic homeostatic mechanism overriding an intrinsic homeostatic process.
NeTakaya

Answer:

Extrinsic regulatory mechanisms are external and depend on the firing of some factor outside the population itself. Among them are interspecific competition, food and space restrictions, very strong climatic variations, weathering and inharmonious relationships with other populations (parasitism and predatism).

Good examples of interspecific competition appear when rabbits, caves, rats compete for the same plant, or different fish and birds, such as the heron, vie for the same species of smaller fish. This is because these different species keep their populations in the same ecological niche. Competition is often so strong that some species eventually, as one example of an extrinsic homeostatic mechanism overriding an intrinsic homeostatic process is their disappearance or migration to other regions.

In this competition, the presence of adaptations among individuals in the population that promote better food search, speed, vision, and others can make the difference between elimination and survival.

8 0
3 years ago
Imagine that you are studying the food preferences of a lizard species across its range. You have hypothesized that because thes
vfiekz [6]

Answer: Option A

Explanation:

The hypothesis states that the lizards living in different regions belong to the different food preferences.

No, the hypothesis will be proved correct only when the lizards will be kept in the same condition then their food preferences will be studied.

If their food preference will still be the same then it can be concluded that they reflect parental food preferences.

Else, if they will feed on the food given to them then the hypothesis will be rejected.

3 0
3 years ago
Your friend brings you rocks with a thick layer of oxidation weathering, and no other visible signs of weathering. this is a clu
Vsevolod [243]
<span>A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. There are three types of weathering, physical, chemical, and biological. For the physical weathering, there are two main types. Freeze-thaw cycles and exfoliation. Obviously the freeze-thaw cycles require water and the exfoliation generally happens through thermal expansion and contraction which doesn't require water. But since neither of these mechanisms were observed, that doesn't indicate if the area was wet or dry. Biological weathering is caused by plants or animals breaking down rocks via chemical (acid) or mechanical (root growth) means. Life generally indicates the presence of water, but since this form of weathering wasn't observed, we still don't have enough data. Chemical weathering is caused by rain water reacting with the rocks to form new minerals and salts. There are several types such as acidic rainwater dissolving part of the rock, and oxidation. With this in mind, let's take a look at the available options. A moist environment because there is a greater density of oxygen in the atmosphere in the presence of water. * Yes, we need a moist environment, but the density of oxygen is fairly constant world wide regardless of how moist or dry the environment is. So this is a bad choice. A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. * Water speeds up chemical weathering of all types. So this is the correct choice. A dry environment because the increased albedo of deserts encourages physical weathering processes such as oxidation. * Yes, the increased albedo of deserts does speed up spalling, but oxidation is a CHEMICAL weathering process, not a PHYSICAL one. So this is a bad choice. A dry environment because in the absence of water oxidation is the dominant weathering process. * Water speeds up oxidation quite a bit. And since the observed oxidation is thick, there's been quite a bit of weathering. So this is a bad choice.</span>
6 0
3 years ago
How does translation occur
julsineya [31]

Translation is the process by which a protein is synthesized from the information contained in a molecule of messenger RNA (mRNA). ... Translation occurs in a structure called the ribosome, which is a factory for the synthesis of proteins.  -google

7 0
3 years ago
Read 2 more answers
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