Why do ecologist make models?

Answers

Answer 1
Answer: Ecologists make models to gain insight into complex phenomena such as the effects of global warming on ecosystems.

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Answer 2
Answer:

Ecologist make models to be able to examine complicated environmental processes more readily and quickly.

Ecologists can also attempt to forecast what will happen in the future. Ecologists use the model to analyze natural events in order to better understand them.

An ecosystem model is an abstract, typically mathematical, representation of an ecological system (varying in scale from an individual population to an ecological community or even a whole biome) that is examined in order to get a better understanding of the real system.

There are two types of Ecologist Models;

(1) analytic models

(2) simulation / computational models.

Thus, to obtain understanding into complicated phenomena such as the consequences of global warming on ecosystems the ecologist make models.

Learn more about Ecologist Models here,

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Networks of blood vessels in bats' wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus paleontologists' recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the hypothesis that Sandactylus flew by flapping its wings, not just by gliding.The argument in the passage relies on which of the following assumptions?(A) Sandactylus would not have had networks of blood vessels in the skin of its wings if these networks were of no use to Sandactylus.(B) All creatures that fly by flapping their wings have networks of blood vessels in the skin of their wings.(C) Winged dinosaurs that flapped their wings in flight would have been able to fly more effectively than winged dinosaurs that could only glide.(D) If Sandactylus flew by flapping its wings, then paleontologists would certainly be able to find some evidence that it did so.(E) Heat generated by Sandactylus in flapping its wings in flight could not have been dispersed by anything other than the blood vessels in its wings.
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The human body contains many different types of glands; glands that secrete digestive enzymes, mucus, and sweat. These secretions are modified, sorted, and packaged for later release from gland cells.What cellular organelle is responsible for modifying, sorting, and packaging proteins and lipids?
A) ribosomes
B) Golgi bodies
C) mitochondria
D) endoplasmic reticulum

Answers

Answer:

The correct answer would be B) Golgi bodies

Golgi body is a cell organelle made up of vesicles and folded membranes.

It is mainly associated with the storage, modification, and packaging of macromolecules such as proteins and fats.

Macromolecules with the help of vesicles are transported from the endoplasmic reticulum to cis-Golgi bodies.  

They are then modified in the folded membranes of the Golgi.

Post-modification they are transported to the different parts of the cell with the help of vesicles.

Golgi bodies are responsible for modifying, sorting and packaging proteins and lipids.

What time period is called the Age of Mammals?

Answers

The Cenozoic Era is also known as the Age of the Mammals

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food?

Answers

Viruses can replicate inside a host that they infect this is the reason why viruses do not have special structure or enzymes that allows them to make their own food. They just replicate and infect but they never make their own food.

Explanation:

Viruses depend on the host cells that they affect to reproduce. When found outside of host cells, viruses live as a protein coat or capsid, sometimes contained within a membrane. The capsid surrounds either DNA or RNA which codes for the virus elements.

Viruses can replicate inside a host that they infect this is the reason why viruses do not have special structure or enzymes that allows them to make their own food. They just replicate and infect but they never make their own food.

What are the main features of a eukaryotic cell?

Answers

a eukaryotic cell has a plasmamembranecytoplasm, and ribosomes. eukaryotic cells have: amembrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)

Define a branch point (also called a node) on a phylogenetic tree and describe what it represents.

Answers

In a rooted phylogenetic tree, each node ... phylogenetic tree that explicitly represents evolutionary time through its branch spans. A spindle diagram (often called

Some animals, such as cows, normally produce only one offspring from each mating. If a cow showed a dominant phenotype, why would a typical testcross be a difficult way to determine the genotype of that animal?

Answers

Answer:

Because of insufficient number of offsprings to determine the result of test cross.

Explanation:

Normally, in genetics, a test cross is a cross between a dominant phenotype (genotype unknown) and a homozygous recessive genotype in order to determine the genotype of that dominant organism.

The result of the test cross is obtained when a 1:1 phenotypic ratio is produced for each trait i.e. 1 dominant trait: 1 recessive trait showing that the parent is heterozygous while all the offsprings will show dominant traits if the dominant phenotype was homozygous. Hence, more than one offspring is required to be able to conclude

In this question, the cow only produce one offspring which may be DOMINANT for the observed trait making it difficult to know if other offsprings will all be dominant or some of them recessive. Hence, it is not a sufficient number needed to determine the genotype from the phenotypic ratio of offsprings.