Answer - C. Reproduction
Reasoning - This was answered before within the community. Here's a reasoning why I chose the answer. - Just like a hydra they are abundant since they can reproduce asexually without having to reproduce with a mate, which means they the ecosystem can eat they and keep the active food chains going.
First of all, this was a bit garbled up, so it is sort of incomplete.
You gave me a total of 43 words, and I only counted 41 slots on the crossword graph itself, which is problematic.
I got as far as I could, but some of the words either weren't provided, or the spaces were made incorrectly for the length of these words.
Across:
2. (black / pitch)
7. conservation
9. radiation
12. crest
13 ?
14. <em>whatever you wrote</em>
15. dense
18. ? (radiant)
19. ? (radiant)
20. amperes
23. medium
25. density
26. ?
30. resistance
31. (pitch / black)
34. voltage
35. insulator
38. amplitudes
39. thermal
40. ?
41. wavelength
Down:
1. electromagnetic
3. (conduction/ convection)
4. (convection/ conduction)
5. (current/ radiation)
6. heat
7. chemical
8. transverse
10. energy
11. nuclear
12. circuit
16. electrical
17. electrons
21. mechanical
24. source
28. ?
32. rise
33. MRS CHEN
34. volts
36. sound
B because it takes in nutrients through endocytosis so the membrane opens up and envelopes the nutrients
Answer:
There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge
Explanation:
Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:
- cell membrane receptors (also called trans membrane receptors)-usually for peptide hormones, such as insulin
- intracellular receptors (also called nuclear receptors)-usually for steroid hormones, such as testosterone.
Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.
Receptors for thyroid hormones are nuclear receptors.
Hello I'm your answerer today,its:
Skeletal
Hope this helps please award brainly :)