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3 years ago

What is the impact of the depletion of fishing stocks?

Biology

2 answers:

posledela3 years ago

4 0

Answer:

Decades of destructive fishing has resulted in the precipitous decline of key fish stocks such as bluefin tuna and Grand Banks cod, as well as collateral impacts to other marine life. Hundreds of thousands of marine mammals, seabirds, and sea turtles are captured each year, alongside tens of millions of sharks.

ziro4ka [17]3 years ago

3 0

It is the same as creating more pests or setting up dominant species which upset the ecological food pyramid leading to decimation of trophic levels or predators and energy cycling. Fishes feed on microscopic algae and animals the primary base of the food chain in water, if they are not checked they will choke the rivers and oceans causing toxic waters. Fish feed to contain them, in the process they grow and increase in numbers but their population is checked by bigger fishes and so on till it reaches a top predator which is usually a large animal.

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What other molecules are carbon atoms in after the chemical change?

Ilya [14]

Answer:Carbon dioxide molecules

Explanation:

5 0

3 years ago

An organism is described as 2n = 48.A) How many chromatids per chromosome are in one meiotic cell during prophase 2?B) How many

Alex

Answer:

A) 48

B) 96

C) 48

D) 48

Explanation:

Attached is a table summarizing the number of chromosomes and chromatids in the different stages of mitosis and meiosis in humans who are described as 2n = 46.

For the organism which is described as 2n = 48, substitute 46 in the table for 48 to get the appropriate figures.

4 0

3 years ago

Would all deer and mice living on a forest be a population why or why not<br>

lozanna [386]

Answer:

yes

Explanation:

They would be a pop. because, they are living organisms is a given area

7 0

2 years ago

Which is a weakness of traditional food webs when they are applied to complex ecological problems?

Anna007 [38]

A food web does not represent all the links in an actual ecosystem.

Explanation:

A food web is also called food cycle. It is understood by the natural interconnection of chain and their graphical representation. The concept is given by Charles Elton. He mentioned about the concept of food cycles in Animal Ecology but later this food cycle is replaced by food web.

Food web are limited representation of eco system. Ecologists can keep together all life forms broadly into one of the two categories which is called tropic levels. These two categories are autotrophs and heterotrophs

6 0

3 years ago

Many species are introduced into new areas every day through ballast water and international shipping; however, not all of these

erica [24]

For a introduced species to be invasive species, there needs to be certain characteristics of the species.

<h3><u>Explanation</u>:</h3>

Invasive species are the species that belong to some other place and are introduced to a new place by means of any human interference. But many species are often transferred from one place to another. But not all of them remain there as an invasive species. This is because for being an invasive species, they need to have certain characteristics:

A. They need to have high rate of reproduction.

B. They need to have short dormancy periods.

C. They need to have high generic variability.

D. They need to be polyphagous and gregarious.

E. They need to have high dispersal rate and great adaptability.

F. They need to have phenotypic plasticity.

3 0

3 years ago