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3 years ago

Explain why the cane toad was a failure as a biological control method in Australia.

1 answer:

7 0

The cane toad was a failure as a biological control method in Australia because:
-The greyback beetle it was supposed to be eating fed at the top of the sugarcane stalks (which were 6-8 meters in height). Cane toads cannot fly or climb and therefore couldnt feed on the beetles.
-The beetles were out during the daytime, and cane toads feed at night.
-The two species are not seasonally compatible (aren't in the same place at the same time of year).
-The toads needed moist conditions to survive, and so moved away from where they were supposed to be.
-The cane toad eats many native species and often out-competes native species for food and breeding sites, leading to the decline of natives.
-Breeding habits made the cane toads a very invasive species.

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The radius of the large sphere is times longer than the

Natalka [10]

Answer:

$\frac{1}{27}$

Explanation:

Consider the small sphere radius is x1.

therefore the large sphere radius is 3x1

As we know that volume of sphere= $\frac{4}{3} \pi \ r^{3}$

So ,

Volume of the small sphere

= $\frac{4}{3}\pi \ x1^{3}$

also Volume of the large sphere

= $\frac{4}{3}\pi \ 3x1^{3}$

$\frac{volume\ of\ small\ sphere}{volume\ of\ large\ sphere} \ =\ \frac{\frac{4}{3}\ \pi\ x1^{3} }{\frac{4}{3}\ \pi\ 3x1^{3} }$

On solving the equation

volume of large sphere=27 * volume of small sphere

Hence $\frac{1}{27} \ times\ volume\ of\ small\ sphere\ is\ smaller\ then\ the\ larger\ sphere$

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4 years ago

Chromosomes other than sex cells are known as

lapo4ka [179]

<span>The answer is autosomes.

</span>In a human diploid somatic cell (2n), there are 22 chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes - 22 pairs of autosomes and 1 pair of sex chromosomes. <span>There are in total 46 chromosomes (23 pairs in 2 copies: 23 × 2 = 46).</span>

6 0

4 years ago

Read 2 more answers

The ability to carry out photosynthesis (using the energy in sunlight to make sugar)...

leva [86]

Answer:

Is currently one of the characteristics of life

Explanation:

One major characteristic of life is nutrition. Nutrition refers to the process by which a living organism obtains its food.

Photosynthesis belongs to the kind of nutrition called autotrophic nutrition. Autotrophs are living organisms that produce their own food from simple inorganic chemicals.

Hence, only living organisms can undergo nutrition and it is already one of the characteristics of life.

8 0

3 years ago

3. The

Nostrana [21]

B the asthenosphere and lithosphere

4 0

3 years ago

What impacts do you think the burmese pythons might have on local ecosystem

Zigmanuir [339]

Introduction of burmese pythons to a local ecosystem can have grave consequences, as has been proven in Florida. Burmese pythons are skilled predators, and they are not easily killed by other animals. If introduced to a climate they can thrive in, they will start hunting local animals. With little to no predators capable of killing them, they will flourish because of plentiful food supply, and they will continue to increase in number. They will decrease the level of animals directly below them in the food chain, which will then increase the number of animals and plants that had previously been eaten by the python's new food.

Basically, don't mess with food chains! :)

5 0

3 years ago