A The observed differences in plants height are due to genetics.
Answers: 1 .The difference in the brightness of two stars with the same surface temperature is attributable to their sizes.( last choice)
2.Most responsible for the formation of a star is gravitational force.(second choice )
3. Blue ( last choice)
4.
A spinning neutron star that appears to give off radio wave pulses is called a pulsar ( third choice)
5.Greater redshifts in the spectra of galaxies indicate faster speeds ( first choice)
Answer: 4. Problem solver
Explanation: you're working to fix a known problem
Answer:
They know how to swim.
they know how to swim
They have bigger ears to prevent overheating.
Explanation:
The most common antibiotic for infections is penicillin.