Answer:
1. Survivors of the pesticide have a gene that protects them from it.
2. Then the survivors pass on the gene to their offspring,
3. Each time the pesticide is sprayed, the insects have a greater chance of survival.
Answer:
igneous rocks - geosphere
oceans, frozen lakes - hydrosphere
gaseous nitrogen - atmosphere
sea animals, marine plants - biosphere
Explanation:
Excitation-contraction coupling refers to the series of events that begins with the excitation of the sarcolemma in response to stimulation by a neurotransmitter, and results in the release of calcium ions from the sarcoplasmic reticulum.
Hence, option D is the 1st process that starts the excitation-contraction coupling.
The answer is Climate change. It will take decades for the
coral reef to recover from the catastrophic climatic changes including El Nino
in 1997-98. Climate Change is the main and undeniable threats to the loss of
the corals. It has negative effects on coral populations in some ways. This
includes the Color Bleaching, Coral Disease, and Ocean Acidification.
Answer:
10 electrons
Explanation:
Normally you would assume the atom to be neutral, meaning the protons and electrons cancel each other, if nothing states the charge of the atom. So, there must be 10 electrons in order to cancel out the protons.
Hope this helped :]
