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Naily [24]
3 years ago
11

How do you think humans might affect the environment? Check all that apply. by adding greenhouse gases to the atmosphere by usin

g natural resources by using sustainable resources by polluting the land, water, and air by creating landfills by introducing invasive species to the environment
Biology
2 answers:
Arada [10]3 years ago
7 0

Answer:

A. by adding greenhouse gases to the atmosphere.

D.by polluting the land, water, and air.

F.by introducing invasive species  to the environment.

OLEGan [10]3 years ago
6 0
The correct answers are <span>by adding greenhouse gases to the atmosphere by using natural resources, by polluting the land, water, and air, by creating landfills and by introducing invasive species to the environment.

Adding greenhouse gases to the atmosphere 
contributes to the rise of the global temperature and climate change which leads to the rise in sea level, and extreme weather conditions. 

By polluting the land water and air and creating landfills humans are destroying not only the habitat of many plants, animals, and other organisms but also for themselves.
 
Overexploitation of the natural resources also leads to the destruction of habitat and collapse of ecosystems.

The introduction of invasive species often leads to disruption of the food chain of an ecosystem since the invasive species might be more efficient in this habitat and suppress the native organisms.

</span>
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Many mutations in receptor kinases that lead to cancer allow the dimerization and activation of the receptor, even in the absenc
dimulka [17.4K]

Answer:

The correct answer is  c It would prevent the receptor from becoming activated.

Explanation:

Mutation in the receptor kinases that leads to cancer allow the dimerization and activation of receptor even in the absence of signalling molecule that means activation of receptor in case of mutant does  not requires the presence of Signalling molecule.

       That means if the antibody prevents the dimerization of the receptor of the mutant then it(antibody) have to prevent the receptor from being activated.

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2 years ago
When does a zygote become an embryo?
Andre45 [30]

Answer:

Explanation:

The transformation of a zygote into an embryo adheres both to nature and to nurture: not only genetics but also environment determines the outcome. This idea has assumed many forms. A territory in the early sea urchin blastula contains clones of founder cells, and each clone contributes exclusively to one territory (Cameron & Davidson, 1991). Both the lineage of a founder cell, i.e. its nature, and the position of a founder cell, which determines how it is nurtured, contribute to its fate. Fertilisation, the topic of the first Forum, fixes the genes; interblastomere communication, the topic here, regulates gene expression. Blastomeres communicate like any other cell – via ligand-receptor interactions and through gap junctions. Saxe and DeHaan review these mechanisms. The definition of ligands and receptors becomes broadened in this context, and cell adhesions as well as gap junctions enter into the story. In spite of these entanglements, it appears that nature uses the same sorts of mechanisms to get cells to specialise that she uses to keep them talking. Thus, neurons and glial cells signal to one another via glutamate receptors and gap junctions (Nedergaard, 1994). Likewise, we expect neurotransmitters (and neurotransmitter transporters) to help signal differentiation. The biophysicist may ask whether electrical properties also play a role, but that we reserve for another Forum. If gap junctions figure in development as fusion pores that pass small molecules and electrical signals between blastomeres, another parallel suggests itself. Brian Dale asked in the first Forum: How does a spermatozoon activate an oocyte? This question, which concerns gamete communication, has produced two schools of thought and remains controversial (Shilling et al., 1994). Do sperm activate oocytes via contact-mediated mechanisms or through fusionmediated mechanisms? Or do both mechanisms occur, as they appear to in development?

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2 years ago
The students in Ms. Hill's science class were investigating the properties of water. Juan dipped a finger in a beaker of water;
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Answer:

B) specific heat

Explanation:

The specific heat of a substance is how much heat per unit mass it need to elevate its temperature by one degree Celsius. Its units are joule per kelvin and kilogram, J/(K kg). <em>In the example given you can observe that water need more heat in order to evaporate compared to the alcohol.</em>

I hope you find this information useful and interesting! Good luck!

3 0
2 years ago
The humpback whale is a large marine mammal that lives wide spread throughout the North Pacific Ocean. Barnacles are small marin
hodyreva [135]

Answer:

commensalism

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4 0
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