How many planets are on earth

This might seam like a weaird qusten my teacher ask what is sex in the same people

Sport is to baseball as stem cell is to? a) cancer b) skin cell c) blastocyts d) animal cell

By what process does nitrogen enter the living components of ecosystems?

In which item is energy stored in the form of gravitational potential energy? A. a slice of bread B. a compressed spring C. an apple on a tree D. a stretched bow string

The immune system is built on millions of cells called a. blood cells b. leukocytes c. lymph cells d. immune cells

What happens to memories while you are sleeping?

If channels in the outer membrane of a neuron were blocked, what would be the consequence? a. membrane fluidity would be impaired and the neuron would undergo apoptosis. b. osmosis would be disrupted and the neuron would be unable to communicate. c.

The tenth cranial nerve: it supplies most of the organs in the thoracic and abdominal cavities. A. olfactory B. trochlear C. vagus D. facial

Which type of cells did multicellular organisms arise? a. Prokaryotic cells b. Eukaryotic cells c. Prokaryotic cells with a capsule d. Both prokaryotic and eukaryotic

How do apple and pinaples grow