Sand is made of different types of rocks shapes and sizes of rocks are not all the same sand is a?

Which of the following statements is true? A) Decomposition and weathering recycle matter in an ecosystem. B) The total amount of energy in an ecosystem is always increasing. C) Primary consumers break down dead organisms into essential chemicals.

Which statement is true about relative dating? A.) It is based on the half-life of carbon-14 atoms. B.) It is based on the position of rock layers. C.) It is the most modern of the dating techniques. D.) It is based on radioactivity analysis.

You have scrape on your knee that has turned into an infection. what type of organisms is responsible for this infection. A. red blood cell B. White blood cell C. bacteria D. skin cells

Match each cellular defense with the infection it would most likely target. ___natural killer cell A. virus-infected cell ___neutrophil B. tapeworm in the intestines ___eosinophil C. bacteria in a skin lesion

An organism that is unable to produce its own food so it must consume other organisms from energy a prokaryote b unicellular c autotroph d asexual e eukaryote f multicellular g heterotroph h sexual

Do muscular individuals automatically have a lower heart rate than less muscular individuals?

The modern heliocentric model of planetary motion states that the planets travel around ...

The spine of the scapula separates which two fossae?

What is the purpose of including a control group in an experiment

Organisms that comprise the greatest mass of living substance (biomass) in a terrestrial food chain (A) Decomposers (e. g., bacteria) (B) Producers (e. g., grasses) (C) Primary consumers (e. g., mice) (D) Secondary consumers (e. g.