Answer:
VEGF is a paracrine signaling molecule because it binds to receptors on nearby cells, at the site where new blood vessels are needed.
Explanation:
The platelet derived growth factors utilizes VEGF (Vascular endothelial growth factor) as a signalling molecule. Cell communication between close cells are aided by Paracrine signalling such as VEGF which forms new blood vessels to its close cells by binding with the receptors
Answer:
faced a struggle for survival
Explanation:
The woolly mammoths became extinct, unlike the other species, because the woolly mammoths faced a struggle for survival due to changing of environmental conditions. Global warming is the main cause of extinction of woolly mammoth which destroy their habitats about 10,500 years ago. The environmental conditions are not favourable for them so they faced struggle for survival which causes extinction of woolly mammoth.
B is the correct answer because it is short for the word “Megaspores” which is what the cells of the flowering plant are called.
A movement in response to gravity is called tropism.
<span>Photosynthesis is relevant in climate change mitigation. With the growing concerns about global warming and its causal effect on climate change, it is important to enrich one's understanding about photosynthesis and its application in mitigating climatic change.</span>
<span>Increased concentration of atmospheric CO2 due to human activities, such as the use of coal in industries and the use of petrochemical fuels in locomotives, is largely recognized as responsible for global warming through greenhouse effect.</span>
This rejects the criticism coming from the so-called "skeptics" notably Singer and Avery (2007). <span>The authors argue that global warming is a natural event that occurs every 1,500 years. They also claim that any panic against perceived disastrous effect of global warming on plant and animal survival and on biodiversity is misplaced, arguing that living organisms have the natural ability to adapt.</span>
<span>
</span>
<span>Hopes this Helps u ;)</span>