The gull eggs are 30,234 times more contaminated with PCBs than the phytoplankton.

A:True

B:False

Name two ways humans can affect the flow of fresh water

Salmon fish hatcheries add a harmless perfume (morpholine) to a stream when they release young fish. When the fish mature, they attract them back to the home stream by using this chemical (in nature the fish smell the unique odors of soil and trees

What effect do fertilizers have on rivers?

In which structure does the fertilized egg develop? ovary fallopian tube uterus vagina

Muscular endurance refers to the maximum amount of force a muscle group can generate.

Biology 1 ecology test why are there so few plants that live at the ground level in a tropical rainforest?

What do plants do with the nitrogen they absorb through their roots?

Which feature may form as slightly acidic surface water and groundwater dissolve carbonate rocks such as limestone? A. lakes B. caves C. mountains D. alluvial fans

Of the events listed here which comes the latest in ciliate reproduction? note: not all events in the reproduction are listed.

Is more oxygen produced with or without oxygen?