Which equation has water as a product in the chemical reaction?

a. Na + Cl NaCl

b. H2O H2 + O2

c. NaOH + H2 Na + H2O

d. CO2 + O2 + energy C6H12O6 + O2

A grass starts with 30,000 kJ of energy. How much energy would a cheetah acquire after it ate a zebra that consumed the grass?

Which microscope is used to observe viruses and the internal structure of thinly sectioned cells?

Predators of different species competing for the same prey is which type of competition?

Match the vocabulary word with its meaning. 1. trait an aspect of ourselves that is stable and enduring 2. continuum an important window of time for development 3. determinism poisonous substances 4.

What is an electrical current? A. Opposition to the flow of electricity B. The amount of energy available to move electrons C. The flow of electrons through a wire D. A build-up of electrons in a centralized location

What is most likely the mass of Sirius?

All but one sratement applies to electromagnectic radiation that is

Are the excretory system and urinary system the same

The fossil record shows that two groups of organisms are related

W jakich sytuacjach zmysł węchu przyzwyczaja się do zapachu?