A. Primary
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Answer: In addition to slowing the overall expansion, gravity causes local clumping of matter into stars and galaxies. ... Within the Local Group, the gravitational interactions have changed the inertial patterns of objects such that there is no cosmological expansion taking place.
Explanation:
Answer:
The Sun
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Answer:
The correct answer is - Fire causes the cone of an older jack pine tree to open up and release seeds.
Explanation:
Fire ecology is a branch of ecology that deals with the involvement of the fire in the ecosystem and its effects on the ecology and how it deals with the natural processes.
Naturally generated fire in forest ecosystem especially in the forests with the pine trees are useful. The coniferous trees like pine trees show adaption to the fire. These trees (pines or jack pines) open up and release the seeds from the cones caused by fire as it melts the covering made up of resin of the woody cones.
The type of immunity is acquired immunity
