Two species interbreed occasionally and produce vigorous, fertile hybrids. When the hybrids breed with each other or with either parent species, however, the offspring are feeble or sterile. These species are affected by

Which two important chemical processes are basically the opposite of each other? photosynthesis and decomposition photosyntheis and cellular respiration combustion and cellular respiration combustion and compaction

Ecosystems will have a greater chance of maintaining equilibrium over a long period of time if they have (1) organisms imported by humans from other environments (2) a sudden change in climate (3) a diversity of organisms (4) predators eliminated

How is salinity affected A / evaporation increases B / freezing increases C / melting increases D / precipitation increases

On the periodic table, electronegativity increases as we move from the bottom to the top. What information does this give us? Bromine is more likely than chlorine to form a chemical bond.

You have learned that scientific thinking involves observing, forming hypotheses, testing hypotheses, and analyzing data. use examples from mendel's scientific process to show how his work fit this pattern.

Which component of blood is responsible for the formation of blood clots? a. all blood cells b. red blood cells c. myoglobin d. platelets e. white blood cells?

What will the majority of pathogens in food be killed by? a) antimicrobial secretions from the sebaceous glands in the skin b) mucus in the trachea c) acid in the stomach d) nose hairs

What can high levels of salt do to a plant

What is the composition of earths inner and outer core?

Which is a gamete? A. testis B. steroid C. sperm D. progesterone