How many chromosomes do humans with down syndrome have?

3). Which process can result in increased biomass for a plant: cellular respiration or photosynthesis? Where does the mass come from? What molecules are taken in by the plant cells?

The death of every member of a particular species is known as what?

Sponges are sessile how do they get food while staying at one place

Which of the following is a nonrenewable resource? O A. Animal species O B. Light energy from the sun O C. Natural gas O D. Mechanical energy from wind

Below are some different scenarios for the heritability of a trait and the selection differential in a population. which scenario will produce the largest response to selection?2

Water has a higher specific heat index than other common materials, so it takes a lot of energy to raise the temperature of water. How would this affect climate? A) Areas surrounded by water would have more snow.

Is pH=2 an acid, a base, or neutral

After one species disappears, the other species in the ecosystem

The level of which hormone increases after ovulation

What does sodium-potassium pump do?