What is a brittle rock that contains fine grains and layers with fossil remains

What are two methods that are used to directly study human chromosomes?

Heartworm is a type of worm that enters a dog's body through a mosquito bite it produces offspring that launches in the dogs arteries and feel feed off of surrounding cells which type of relationship is this

If a corn plant has a genotype of Ttyy, what are the possible genetic combinations that could result in a single grain of pollen from this plant? Ty, tyTY, tyTY, Ty, tyTy, ty, tY, TY

Describe how breathing is controlled

If a plant uses up all the available carbon dioxide, which event will happen first?

Which of these groups of animals are endargered a. mice b. killer whales c. dinosaurs d. sea turtles

Levels of organization of the biosphere

From where dothe kenetic tiles collect energy

Landscapes will undergo the most chemical weathering if the climate is * A) cool and wet B) warm and wet C) cool and dry D) warm and dry

Why are sharks so successful at what they do?