Which is a likely effect of continued use of fossil fuels:
a. increased deforestation
b. decreased plant growth
c. higher sea levels
d. lower temperatures

Classify the structures as homologous or analogous, depending on their structure and function.

Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?