What is apoptosis?
a. the proliferation of cytotoxic t-cells.
b. a protein molecule that forms a pore in the membranes of infected cells.
c. the process of programmed cell death.
d. the receptor on a cytotoxic t-cell that recognizes mhc molecules.

c.The process of programmed cell death.

Explanation:

Apoptosis is a kind of programmed cell death process. This can be seen in multicellular organisms. This involves the biochemical changes in the body of the organism which lead to death of cells. The changes associated in the cell during this condition includes the cell shrinkage, blebbing, condensation of the chromatin, nuclear fragmentation, decay in mRNA, and DNA fragmentation.

poison levels are being represented and it show how much poison the producer has and how much the consumer has   and damage the organisms in it, particularly in the predators at the end of the chain. this is because accumulating compounds cannot be excreted.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.