How long have humans been recording sunspots

Leonardo is explaining the ecological pyramids to his daughter. He tells her that often scientists do not favor pyramid of biomass. Why would he say that? A. because the available biomass may be less than the actual energy provided B.

Explain the meaning of the term water-soluble

Members of one kind of organism in a ecosystem

Astrologers use the relative positions of stars, planets, and moons to make predictions about the future. Which answer correctly explains why astrology is or isn't a science?

If curly hair is a dominant trait what are the parents in the pedigree

How does the population growth rate affect how long Earth's coal supply will last? A. The coal supply lasts the longest when the population growth rate is high. B. The coal supply is used up the slowest when the population growth rate is average. C.

Within which structure does the placenta normally develop

A 29-year-old female presents with fever, cloudy urine, flank pain, and hematuria. these signs and symptoms support which diagnosis

What is the term for a male reproductive cell?

What happens if people keep killing sharks and who wants to stop it and how may do we kill a year