Comparison of the human ecological footprint to Earth's biocapacity suggests that
A) the human population can continue at its present level of resource usage indefinitely.
B) global warming is seriously damaging most ecosystems.
C) the human population is growing slowly.
D) the human population will soon rapidly decrease in size.
E) the human population cannot sustain its current level of resource usage.
E
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Which of the following is incorrectly paired?
a. tumor—mass of cells resulting from uncontrolled growth b. metastasize—cancerous cells spreading throughout the body c. oncogenes—mutated forms of genes that regulate cell growth d. tumor suppressor gene—mutated form of a gene that suppresses growth
Solute and water activity
What will be an ideal response?
In order for a cancer to develop, cells must be capable of breaking away from neighboring cells, and they must ignore growth-inhibitory signals from other cells, resulting in uncontrolled growth and cell division
Indicate whether the statement is true or false
The maintenance of cell structure requires energy.
Answer the following statement true (T) or false (F)