A hundred years ago there were 350 000 blue whales.
Now there are only about 10 000 blue whales.
Suggest why the blue whale population has decreased.

Blue whales were significantly depleted by commercial whaling activities worldwide. The latest stock assessments of blue whales include data for various stocks, including areas of the North Pacific and western North Atlantic Oceans.

Whaling killed hundreds of thousands of blue whales from the early 1900s until it became illegal in 1966. Blue whales continue to be threatened by boats, anthropogenic noise, pollution with toxic chemicals, climate change (which may affect how the population of krill), and from fishing.

How can we prevent blue whales from extinction?

Adopt. Adopt a whale and help us protect these amazing creatures.

Join. You can join our team and help us save whales and dolphins.

Donate. Your gifts help us take action for whales and dolphins.

Shop. Support WDC by shopping for yourself or a friend.

Hope this helps. Thanks!

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

you click your profile picture in the top right corner and it says edit profile.