In an African grassland, all of the animals have only one watering hole available with fresh water in the summer. A drought occurred over the summer, and the amount of water in the watering hole decreased significantly. How did this impact the animals in this ecosystem? Competition increased among the animals.

Competition increased among the animals.

Mutualism increased among the animals.

Mutualism increased among the animals.

Some consumers became decomposers.

Some consumers became decomposers.

Some producers became consumers

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Number and variety of living organisms includes genetic, species, and ecological types