A person's kidneys start secreting renin. This hormone is known to

regulate blood pressure

produce insulin

control glucose levels

raise calcium levels

During a trip to the galapagos island, which observation led Charles darwin to suspect that organisms change over time

What was the most important thing to occur in the first 50,000 years of the universe? a. Matter c. Mass b. Electromagnetic radiation d. The Doppler effect

Water vapor can make up as much as 90% of the greenhouse gases by volume in Earth's atmosphere. However, water vapor is rarely identified as a major agent of climate change. What best describes the role water vapor plays in the greenhouse effect?

Which best describes the role of nucleic acids? to transmit genetic information to regulate cell processes to provide cellular structure to fight against disease

How do trees control noise pollution?

The evolution of populations due to chance isa) genetic drift. b. has more effect in large populations than in small populations. c. gene flow. d. natural selection. e. genetic variation.

When you first get into the swimming pool the water feels rather cool; but after swimming for a while the water feels fine. a friend asks you how the water is and you tell her the "water's great".

What part of the brain is primarily responsible for monitoring blood glucose levels and causing chemical reactions to spur us to eat when glucose levels are low?

Which cell structure is responsible for controlling what enters the cell? select one: a. cytoplasm b. nuclear membrane c. plasma (cell) membrane d. endoplasmic reticulum

All of the following are functions of the peripheral nervous system except it interprets signals from the external environment it sends signals to the internal organs it receives messages from the central nervous system it sends messages directly to