The correct statements are 1, 2, and 5 as they explain the adaptations that mussels developed to prevent their extinction and how this aided them in natural selection.
Crabs are omnivores. The smaller crabs can eat seaweed, worms, shrimp, algae, etc while the larger ones can eat mussels, snails, and squid. Crabs can change their feeding grounds because of environmental changes. Mussels being the prey of crabs were forced the development of new traits to ensure their survival. They started to produce thicker shells. This allowed the mussels with thicker shells to survive as they would not get eaten by the crabs, thus undergoing natural selection. The development of said trait improved the survival rate of mussels and prevented them from going extinct due to predation.
Note: The question seems to be incomplete and the options could have been
- "A change in the environment led to a new distribution of traits in a population.
- The trait of shell thickening underwent natural selection.
- The trait for shell thickening will not be selected by future mussel generations.
- Half of the mussel population developed the trait while the other half did not.
- Mussels with the shell thickening trait had a greater chance of survival."
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Answer:
Check the explanation
Explanation:
Month 1
Fertilization
Embryo formation
Blastocyst
Fetus development
Month 2
Fetus growth
External organs begin to differentiate
Month 3
Eyelids form
Nose begins to develop
Face starts to form
Month 4
Organ systems complete
Fetal circulation complete
Placenta complete
Distinct fingers and toe
Month 5
Fetus size 10 – 17 cm
Heartbeat is present
Sex differentiated
Rudimentary kidneys formed
Month 6
Fetus size 25 cm
Weight 260gms
Fetal movements felt by mother
Langua covers
Month 7
Fetus size 28 – 36cm
Weight 680gms
Eyebrows and finger nails develop
Wrinkled skin
Month 8
Fetus size 35 – 38 cm
Weight 1200 – 1800gm
Eyes open and close
Skin is red
Month 9
Fetus size 42 – 49 cm
Weight 1900 – 2700 gms
Eyelids open
Amniotic fluid decreases
Month 10
Fetus 48 – 52 cm
Weight 3000g
Smooth skin
Bones osstifies
Answer:
B) they are the starting materials for cellular respiration
<span>Consider a female firefly that produces pheromones, which in turn cause males of the same species to fly toward her. in this scenario, the male would be the receiver and the female the sender.</span>
