List the reasons why food chains do not tend to exceed four links

Phosphate detergents are effective for cleaning laundry and dirty dishes. However, these phosphorus-laden products have been banned in Australia, the European Union, Canada, and some states in the U. S.

Which characteristics is common to all prokaryotes and eukaryotes

Why is oxygen important for maintaining your muscles functions

How does a mechanic know that his wrench is exerting an unbalanced force on a bolt? A. the bolt begins to turn B. he feels pressure between his hand and the wrench C. the bolt does not move D. the wrench begins to bend

Which biome type covers much of the central United States from North Dakota to Texas? A) Temperate broadleaf forest B) Temperate steppe C) Semiarid desert D) Taiga

Which of the following correctly displays the sequence of developmental milestones? A) blastula → gastrula → cleavageB) cleavage → gastrula → blastulaC) cleavage → blastula → gastrulaD) gastrula → blastula → cleavage

What is true about DNA

Can a person with type O blood receive any other blood type besides type O? Why?

Why do it rain in the sun

The table below shows the number of foot bones in some horse fossils. Horse Fossil Record Horse Fossil Number of Foot Bones P 19 Q 17 R 24 S 13 Ancient horses had more bones in their foot then present-day horses.