farming practices that expose topsoil to water and wind often result in which degraded the soil and can ultimately threaten food production

i think it's they require warm air

explanation:

tornados usually happen when it's raining right so when it's raining it cools down so if the temperature keeps changing then i think a tornado occurs sorry if it's wrong

not sure but try c two haploid cells

explanation:

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

sex cells are usually half's then they find another half and make a fertilize egg