Which of the following statements is true? (1 point) a) atoms exist in more types than molecules do. b) molecules result when atoms lose electrons. c) atoms bond with one another in a molecule. d) molecules result when atoms acquire extra neutrons.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What is turgor pressure, what causes it, and what does it do for a plant?