Consider a food chain with 1,000 joules (an energy unit) available at the producer level. If this food chain is grass - > grasshopper - > lizard - > crow, how much energy is found at the level of the crow?

Give examples of minerals that exhibit each of the six main crystal systems?

A Barr body is normally found in the nucleus of which kind of human cell? a. Somatic cells of a female only b. Somatic cells of a male only c. Sperm cells only d. Both male and female somatic cells e. Unfertilized egg cells only

The primary function of the respiratory system is gas exchange, but it is also involved in speech. Which organ of the respiratory system enables the generation of sound? A. Pharynx B. Larynx C. Trachea

A scientist observes some cells under a compound microscope and needs to determine if they are bacteria or yeast. Aside from size, what chemical compounds (not organelles!) would positively identify the cell as either a bacterium or a yeast?

Which light source is part of the control group for William's experiment?

Which is a biological activity a person can do at the beach? Question 17 options: experiment with sand erosion patterns identify various minerals in the sand measure tidal differences during the day observe the feeding behaviors of gulls

What type of alternative fuel comes from soybeans?

Explain the difference between an iconic compound and a molecule

Skin cancer is to exposure to the UV radiation as a keratin is to tanning b acne is to excessive secretion of oil c waterproofing is to temperature regulation d melanin is to acne

There could be many possible interpretations of what surrounds you in the natural world. O True O False