Fossils of an animal called ichthyostega shows that it had lungs and legs. it also had teeth and a tail similar to those of fish. ichthyostega is considered to be one of the first amphibians. other fossils show that amphibians lost these fish-like features. how might scientists interpret the fossil of ichthyostega?

a)it was the last of the animals that became fish

b)it might be an animal that came out of the ocean and began to live on land

c)it might be a connection to birds that returned to the ocean to become fish

d)it was the last of the land animals with lungs

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

There are only about 250,000 known fossil species. true or false