the balance of the ecosystem will disturbed if the number of sparrows decreases dramatically. Predict and give changes to the number of snakes and give your reasons.

Which statement about the kidney and water is correct? The kidney removes some water from the blood by filtration, after which water is not reabsorbed.

Which substance is removed from the atmosphere so that plants can carry out photosynthesis? A) nitrogen B) water vapor C) oxygen D) carbon dioxide I believe it's D but I'm not sure

New biosensors, applied like a temporary tattoo to the skin, can alert serious athletes that they are about to "hit the wall" and will find it difficult to continue exercising.

16. the process of making an inference, an interpretation based on observation and prior knowledge

List the different levels of an organisms organization from a cell up:

1 pts A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed.

How do I get the answers for the insect identificationusing the dichotomous key?

How do earthquakes, volcanic eruptions, Floods, landslides, Hurricanes, and tornadoes affect the oceans, the land and the environment?

Which are early (prodromal) clinical manifestations of hepatitis? a. fatigue, fever, hyperalgia, and vomiting b. light-colored stools, dark-colored urine c. large, tender liver; itching; jaundice d. pain in the left upper quadrant, splenomegaly?

If you were a paleontologist, which species would you expect to find first in the fossil record? a. Horse b. Plant c. Frog d. Shark e. Chicken