Explain Why does the specimen must be centered in the field of view on low power before going to higher power

Predator and prey relationships are an important part of the ecosystem. Explain how the Orcas and leopard seals are tertiary consumers?

cross a white flowered pea plant with wrinkeld seeds and a pea plant that is heterozgous with purple flowers and seed

A type of membrane which allows only certain molecules to pass through is called?

Which is the last stage of speciation? A) the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring B) The populations are isolated and thus do not interbreed

What percentage of caterpillars original energy is available to the hawk?

To be useful in a science, a hypothesis must be ...

Sometimes when people are cold they rub their hands together to create friction. Keeping this is mind, briefly explain the relationship between friction and thermal energy?

The cells of the suprarenal cortex produce more than two dozen steroid hormones collectively called

How does the study of biodiversity begin

Phytoplankton are essential because they produce which of the following? A. oxygen B. nitrogen C. sulfur D. phosphorus