volcanic activity
Answer: Option D.
<u>Explanation:</u>
Volcanoes are regular along tectonic plate boundaries where oceanic plates sink underneath different plates. As a plate sinks profound into a subduction zone, it warms and starts to soften, shaping magma.
Volcanoes are likewise basic along structural limits where plates pull separated, permitting magma to ascend from the mantle.Volcanoes are generally basic in these geographically dynamic limits. The two sorts of plate boundaries that are well on the way to create volcanic movement are divergent plate boundaries and convergent plate boundaries.
The three structure a flowering plant can use to reproduce asexually are Roots (turbos, rhizomes etc.), stems and leaves. Flowers are used for
sexual reproduction, the other parts have the potential to give rise to
new plants (or plantlets) adventitiously.
Answer:
Cellular energy
Explanation:
Osmosis is the movement of water from a less concentrated to more concentrated solution across a semi-permeable membrane. Cellular energy is not required in osmosis because it is a passive process. Osmosis is technically more or less the selective diffusion of water molecules across a membrane that selectively locks out other larger molecule like ions. Water will, therefore, move from the solution where there are more water molecules to the solution with fewer water molecules.
Answer:
The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.
Explanation:
In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.
Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.
The correct answer is (b.) infiltration. Rainfall is to precipitation as groundwater is to infiltration. Precipitation is the release of the water from the cloud (evaporated water) in the form of rain and snow. Infiltration is a process in which the water from the ground enters the soil.
