Based on the chart below, if a patient can receive only blood types 0, 0+, B-, and Bt, which blood type does she have?
Patient's Blood Type
Donor's Blood Type
0- O+ B- B+ A- A+ AB-AB+
AB+
✓ ✓ ✓VY
AB-
✓ ✓ ✓
A+ ✓
✓
A-
B+
B-
✓
O+ ✓ ✓
O ✓
B+
B-

this is math not biology xd

the endomembrane system i think

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.